National Library of Energy BETA

Sample records for mn 1973-1976 los

  1. LOS

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Advancing the art of tuberculosis detection April 19, 2013 LOS ALAMOS, N.M., April 19, 2013-New work from Los Alamos National Laboratory shows promise for stemming the advance of tuberculosis (TB) by revealing how the bacterium interacts with its human hosts and thus providing a new pathway for early detection in patients.A recent publication from the Los Alamos Biosensor Team describes the association of a key tuberculosis virulence factor, lipoarabinomannan (LAM) with human high-density

  2. LOS

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    access restrictions lifted August 6, 2012 LOS ALAMOS, N.M., August 6, 2012-Effective 3:30 p.m. today, Los Alamos National Laboratory has lifted access restrictions. Vehicle access points on West Jemez Road will be open to non-badge holders, who remain subject to normal security rules regarding weapons or other prohibited items

  3. LOS

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    N.M., April 19, 2013-New work from Los Alamos National Laboratory shows promise for stemming the advance of tuberculosis (TB) by revealing how the bacterium interacts with its...

  4. Los

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    change vehicle traffic- screening regimen at vehicle inspection station September 1, 2009 Los Alamos, New Mexico, September 1, 2009-Los Alamos National Laboratory is changing its staffing of the vehicle inspection station at East Jemez Road and Diamond Drive effective Saturday, September 26.Beginning on that day, lanes two through five will be open 24 hours a day and won't be staffed by a Laboratory protective force officer. Laboratory employees and other motorists need not stop at this vehicle

  5. Team OptiMN

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    University of Minnesota Team OptiMN "OptiMN Impact Home" Project Summary Designed to fit on the majority of North Minneapolis infill lots, the OptiMN Impact Home is a collaborative project between the University of Minnesota and Urban Homeworks. The overarching goal was a flexible, high-performance, energy-efficient, and affordable house that can be easily built by Urban Homeworks and purchased by eligible low-income residents of North Minneapolis through the Green Homes North program.

  6. CRAD, NNSA- Maintenance (MN)

    Broader source: Energy.gov [DOE]

    CRAD for Maintenance (MN). Criteria Review and Approach Documents (CRADs) that can be used to conduct a well-organized and thorough assessment of elements of safety and health programs.

  7. MN Office of Energy Security | Open Energy Information

    Open Energy Info (EERE)

    MN Office of Energy Security Jump to: navigation, search Name: MN Office of Energy Security Place: St. Paul, MN Website: www.mnofficeofenergysecurity.c References: MN Office of...

  8. Category:Minneapolis, MN | Open Energy Information

    Open Energy Info (EERE)

    16 total. SVFullServiceRestaurant Minneapolis MN Northern States Power Co (Minnesota) Excel Energy.png SVFullServiceRestauran... 89 KB SVHospital Minneapolis MN Northern States...

  9. Living in Los Alamos

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Living in Los Alamos Living in Los Alamos The enchanting surroundings, extraordinary people, and rich history make Los Alamos so much more than just a place to do great work. Discover the many advantages of living and working in Los Alamos. AROUND LOS ALAMOS Communication KRSN Community Radio Los Alamos Daily Post Los Alamos Monitor Education Los Alamos Public Schools Pajarito Environmental Education Center University of New Mexico - Los Alamos The Arts Fuller Lodge Art Center Los Alamos Little

  10. Mn deposition on Ni{sub 2}MnGa(100) (Journal Article) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Mn deposition on Ni{sub 2}MnGa(100) Citation Details In-Document Search Title: Mn deposition on Ni{sub 2}MnGa(100) We report the study of Mn adlayers on a Mn deficient Ni{sub 2}MnGa(100) surface by using low energy electron diffraction (LEED). The spot profile analysis indicates that after 0.2 monolayer (ML) deposition, the LEED spots become very sharp. This pattern indicates the removal of Mn vacancies formed on the surface due to Mn deficiency. But with further growth of Mn layers on this

  11. Microsoft Word - Mn.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    5 Structural Determination of Marine Bacteriogenic Manganese Oxides John R. Bargar, Samuel M. Webb (Stanford Synchrotron Radiation Laboratory), and Bradley M. Tebo (Oregon Health and Science University) Bacterial oxidation of Mn(II) impacts the global geochemical cycling of carbon, nitrogen, sulfur, nutrients, and contaminants in the environment. Manganese is abundant in the biosphere (~10 14 Kg of suspended and dissolved manganese in the oceans) and is second only to iron in relative

  12. DOE - Office of Legacy Management -- Elk River Reactor - MN 01

    Office of Legacy Management (LM)

    Elk River Reactor - MN 01 FUSRAP Considered Sites Site: Elk River Reactor (MN.01 ) Eliminated from consideration under FUSRAP - Reactor was dismantled and decommissioned by 1974 Designated Name: Not Designated Alternate Name: None Location: Elk River , Minnesota MN.01-1 Evaluation Year: 1985 MN.01-1 Site Operations: Boiling water reactor demonstration, research and development program MN.01-1 Site Disposition: Eliminated MN.01-1 Radioactive Materials Handled: None Indicated Primary Radioactive

  13. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    3, 2015 Projects save taxpayer dollars, promote environmental stewardship, sustainability LOS ALAMOS, N.M., April 22, 2015-Nearly 400 Los Alamos National Laboratory employees on 32...

  14. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    sustainability award October 14, 2010 LOS ALAMOS, New Mexico, October 14, 2010-Los Alamos National Laboratory recently received an Environmental Sustainability (EStar) ...

  15. Living in Los Alamos

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Education Center University of New Mexico - Los Alamos The Arts Fuller Lodge Art Center Los Alamos Little Theatre Reel Deal Movie Theater County Services Aquatic...

  16. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2009 Lab contributes computer modeling, antibody engineering capabilities Los Alamos, New Mexico, July 28, 2009- Los Alamos National Laboratory scientists will codirect a new...

  17. Los Alamos VISTAS

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos VISTAS /newsroom/_assets/images/newsroom-icon.jpg Los Alamos VISTAS Los Alamos Vistas highlights the experimental physical sciences at Los Alamos-covering innovative, cross-disciplinary research and development-and producing breakthrough solutions to the most pressing national security challenges. All issues VISTAS cover Fall 2013: 70 years of making, modeling, measuring (pdf) VISTAS cover Winter 2012: Los Alamos NPAC research (pdf) VISTAS cover Fall 2010: MaRIE (pdf) VISTAS cover

  18. Los Alamos Employees' Scholarship

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Sixty-five New Mexico students receive Los Alamos Employees' Scholarship Fund scholarships May 1, 2012 - 2 - Scholarship campaign begins today for 2013 scholarship awards LOS ALAMOS, New Mexico, May 1, 2012-Sixty-five students from seven Northern New Mexico counties are recipients of Los Alamos Employees' Scholarship Fund scholarships, funded through more than $500,000 in donations from Los Alamos National Laboratory employees and the company that manages the Laboratory. Los Alamos High School

  19. SSL Demonstration: Bridge Lighting, Minneapolis, MN

    SciTech Connect (OSTI)

    2014-10-01

    DOE Solid-State Lighting GATEWAY summary brief for Phase II report on the longer-term performance of LED lighting installed in 2008 on the I-35W Bridge in Minneapolis, MN.

  20. High Mn austenitic stainless steel

    DOE Patents [OSTI]

    Yamamoto, Yukinori (Oak Ridge, TN) [Oak Ridge, TN; Santella, Michael L (Knoxville, TN) [Knoxville, TN; Brady, Michael P (Oak Ridge, TN) [Oak Ridge, TN; Maziasz, Philip J (Oak Ridge, TN) [Oak Ridge, TN; Liu, Chain-tsuan (Knoxville, TN) [Knoxville, TN

    2010-07-13

    An austenitic stainless steel alloy includes, in weight percent: >4 to 15 Mn; 8 to 15 Ni; 14 to 16 Cr; 2.4 to 3 Al; 0.4 to 1 total of at least one of Nb and Ta; 0.05 to 0.2 C; 0.01 to 0.02 B; no more than 0.3 of combined Ti+V; up to 3 Mo; up to 3 Co; up to 1W; up to 3 Cu; up to 1 Si; up to 0.05 P; up to 1 total of at least one of Y, La, Ce, Hf, and Zr; less than 0.05 N; and base Fe, wherein the weight percent Fe is greater than the weight percent Ni, and wherein the alloy forms an external continuous scale including alumina, nanometer scale sized particles distributed throughout the microstructure, the particles including at least one of NbC and TaC, and a stable essentially single phase FCC austenitic matrix microstructure that is essentially delta-ferrite-free and essentially BCC-phase-free.

  1. Local environment of Mn in Mn delta-doped Si layers

    SciTech Connect (OSTI)

    Xiao, Q.F.; Kahwaji, S.; Monchesky, T.L.; Gordon, R.A.; Crozier, E.D.

    2009-11-09

    Dilute magnetic semiconductors combine both magnetic ordering and semiconducting behaviour, leading to potential spintronic applications. Silicon containing dilute Mn impurities is a potential dilute magnetic semiconductor. We have grown Mn delta-doped films by deposition of 0.7 of a monolayer of Mn on Si(001) by molecular beam epitaxy and capping the film with Si. The magnetic properties are likely sensitive to the distribution of Mn on substitutional or interstitial sites and the formation of metallic precipitates. We have used polarization-dependent XAFS to examine the local structure. We compare to a thicker MnSi film grown on Si(111) and also examine the influence of lead on the manganese environment when used as a surfactant in the growth process.

  2. Los Alamos, NASA

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Unusual light in dark space revealed by Los Alamos, NASA November 7, 2014 Near-infrared data could change the way we think about galaxies LOS ALAMOS, N.M., Nov. 7, 2014-By looking...

  3. Los Alamos National Laboratory's

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    takes part in Blue Star Museums program May 16, 2012 Free admission for active duty military, their family members LOS ALAMOS, New Mexico, May 16, 2012-Los Alamos National...

  4. Los Alamos Postdoc Association

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Postdoc Association Los Alamos Postdoc Association Fostering a sense of community, advocating for the postdoctoral community, and providing career development information. Contact Postdoc Program Office Email Postdocs are not only the future of science, but specifically, the future of LANL. Making the life of Los Alamos Lab postdocs more fulfilling socially, professionally LAPA logo The Los Alamos Postdoc Association (LAPA) at Los Alamos National Laboratory fosters a sense of community among the

  5. Properties of (Ga,Mn)As codoped with Li

    SciTech Connect (OSTI)

    Miyakozawa, Shohei; Chen, Lin; Matsukura, Fumihiro; Ohno, Hideo

    2014-06-02

    We grow Li codoped (Ga,Mn)As layers with nominal Mn composition up to 0.15 by molecular beam epitaxy. The layers before and after annealing are characterized by x-ray diffraction, transport, magnetization, and ferromagnetic resonance measurements. The codoping with Li reduces the lattice constant and electrical resistivity of (Ga,Mn)As after annealing. We find that (Ga,Mn)As:Li takes similar Curie temperature to that of (Ga,Mn)As, but with pronounced magnetic moments and in-plane magnetic anisotropy, indicating that the Li codoping has nontrivial effects on the magnetic properties of (Ga,Mn)As.

  6. Los Alamos National Security, LLC Los Alamos National Laboratory...

    Office of Environmental Management (EM)

    Security, LLC Los Alamos National Laboratory (LANL) Voluntary Protection Program (VPP) Assessment Los Alamos National Security, LLC Los Alamos National Laboratory (LANL) Voluntary...

  7. Spin reorientation and Ce-Mn coupling in antiferromagnetic oxypnictide CeMnAsO

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Zhang, Qiang; Tian, Wei; Peterson, Spencer G.; Dennis, Kevin W.; Vaknin, David

    2015-02-18

    Structure and magnetic properties of high-quality polycrystlline CeMnAsO, a parent compound of the “1111”-type oxypnictides, have been investigated using neutron powder diffraction and magnetization measurements. We find that CeMnAsO undergoes a C-type antiferromagnetic order with Mn2+(S = 5/2) moments pointing along the c axis below a relatively high Néel temperature of TN = 347(1) K. Below TSR = 35 K, two simultaneous transitions occur where the Mn moments reorient from the c axis to the ab plane preserving the C-type magnetic order, and Ce moments undergo long-range AFM ordering with antiparallel moments pointing in the ab plane. Another transition tomore » a noncollinear magnetic structure occurs below 7 K. The ordered moments of Mn and Ce at 2 K are 3.32(4) μB and 0.81(4)μB, respectively. We find that CeMnAsO primarily falls into the category of a local-moment antiferromagnetic insulator in which the nearest-neighbor interaction (J1) is dominant with J2 < J1/2 in the context of J1 – J2 – Jc model. The spin reorientation transition driven by the coupling between Ce and the transition metal seems to be common to Mn, Fe, and Cr ions, but not to Co and Ni ions in the isostructural oxypnictides. As a result, a schematic illustration of magnetic structures in Mn and Ce sublattices in CeMnAsO is presented.« less

  8. Magnetoelectric coupling tuned by competing anisotropies in Mn...

    Office of Scientific and Technical Information (OSTI)

    Magnetoelectric coupling tuned by competing anisotropies in Mn 1 - x Ni x TiO 3 Prev Next Title: Magnetoelectric coupling tuned by competing anisotropies in Mn 1 - x Ni x TiO ...

  9. Around Los Alamos

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Around Los Alamos Around Los Alamos Outside the museum, explore the historic town, natural wonders of the high desert and abundant Native American and Spanish cultural jewels. Take the historic walking tour from ancestral puebloan dwellings to a homesteader's cabin to the very spot where the first atomic bomb components were assembled. For high-altitude history and fun, discover Los Alamos! Rio Grande Overlook View of Rio Grande from the White Rock Overlook The Bradbury Science Museum isn't the

  10. through Los Alamos National

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Area schools get new computers through Los Alamos National Laboratory, IBM partnership May 8, 2009 LOS ALAMOS, New Mexico, May 8, 2009-Thanks to a partnership between Los Alamos National Laboratory and IBM, Northern New Mexico schools are recipients of fully loaded desktop and laptop computers. Officials from the Laboratory's Community Programs Office, the Española School Board, and elected officials including Española Mayor Joseph Maestas recently dedicated the technology center at Española

  11. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and LANS partner to record $2 million in pledges for local United Way programs November 20, 2008 LOS ALAMOS, New Mexico, November 20, 2008- Los Alamos National Laboratory employees once again demonstrated concern for their communities and those in need by pledging a record $1 million to United Way programs in Northern New Mexico and Santa Fe. With a dollar-for-dollar match by Los Alamos National Security, LLC, which operates the Laboratory, the total contribution is more than $2 million.

  12. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    3 million to local United Way organizations, other nonprofits December 1, 2009 Los Alamos, New Mexico, December 1, 2009-Los Alamos National Laboratory employees once more demonstrated concern for their communities and those in need by pledging a record $1.3 million to United Way and other eligible nonprofit programs.Los Alamos National Security, LLC, which operates the Laboratory, plans to prorate its $1 million match among the selected nonprofit organizations, bringing the total donation to

  13. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Recovery Act funds July 21, 2009 Funding will aid environmental cleanup and compliance Los Alamos, New Mexico, July 22, 2009-Los Alamos National Laboratory today announced plans to begin spending environmental cleanup funds made available under the American Recovery and Reinvestment Act. The $212 million in Recovery Act funds will go toward environmental compliance and cleaning up Cold War-era buildings slated for demolition. "The Recovery Act will help change the skyline of Los Alamos,

  14. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    5 million to local United Way organizations, other nonprofits November 18, 2010 LOS ALAMOS, New Mexico, November 18, 2010-Los Alamos National Laboratory employees have again demonstrated concern for their communities and those in need by pledging a record $1.5 million to United Way and other eligible nonprofit programs. Los Alamos National Security, LLC, which operates the Laboratory, plans to prorate its $1 million match among the selected nonprofit organizations, bringing the total donation to

  15. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    selection of venture acceleration fund recipients June 15, 2011 LOS ALAMOS, New Mexico, June 15, 2011-Los Alamos National Laboratory (LANL) has selected Manhattan Isotope Technology, LLC and Vista Therapeutics, Inc. as recipients of $100,000 awards from the Los Alamos National Security, LLC Venture Acceleration Fund.The Venture Acceleration Fund (VAF) invests in innovative Northern New Mexico companies seeking to commercialize technology and take it to market faster. VAF investments help the

  16. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    describes storm damage to environmental monitoring stations, canyons September 18, 2013 Stations supporting Santa Fe water utility returned to service LOS ALAMOS, N.M., Sept. 20, 2013 - Hours after a disaster declaration by Los Alamos County, Los Alamos National Laboratory officials on Friday described "millions" of dollars in damage to environmental monitoring stations, monitoring wells, access roads and badly eroded canyon bottoms. - 2 - "Last week we experienced an epic

  17. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    new student app July 15, 2014 Job searching tool for students, postdocs LOS ALAMOS, N.M., July 15, 2014-Los Alamos National Laboratory recently launched its new student mobile app that students and postdoctoral candidates can use to learn about employment opportunities, science research, education programs and more. The Los Alamos Students mobile app is free and can be downloaded from iTunes and Google Play (for android platforms). "The Laboratory's new Student App is a great way for

  18. Los Alamos National Laboratory's

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Safety Short program wins Department of Energy Innovation Award October 7, 2010 Laboratory recognized for "outstanding industry performance" LOS ALAMOS, New Mexico, October 7-Los Alamos National Laboratory received the U.S. Department of Energy Voluntary Protection Program's Innovation Award for its Safety Short program of videos, fliers, and posters at a recent DOE-VPP conference in Orlando, Florida. - 2 - Los Alamos was honored for "Outstanding industry performance and

  19. exploration, Los Alamos Rover

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    NASA agreements advance Mars exploration, Los Alamos Rover instrument a key component June 17, 2015 SuperCam's body to be built at Los Alamos and the mast in France LOS ALAMOS, N.M., June 17, 2015-NASA Administrator Charles Bolden and Jean-Yves Le Gall, president of the French space agency, Centre National d'Etudes Spatiales (CNES), signed an agreement Tuesday at the Paris Air Show for France to provide the mast unit for the SuperCam component of NASA's Mars 2020 rover. Los Alamos National

  20. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    5th Hazmat Challenge July 27, 2011 Competition tests skills of hazardous materials response teams LOS ALAMOS, New Mexico, July 27, 2011-Twelve hazardous materials response teams...

  1. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    4th Hazmat Challenge July 22, 2010 Competition tests skills of hazardous materials response teams LOS ALAMOS, New Mexico, July 22, 2010-Fourteen hazardous materials response teams...

  2. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    said. "Our licensing and software teams have worked very hard to offer this specialized model for those wanting to quickly license Los Alamos technology." - 2 - The Express...

  3. CaMn2Al10: Itinerant Mn magnetism on the verge of magnetic order

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Steinke, L.; Simonson, J. W.; Yin, W. -G.; Smith, G. J.; Kistner-Morris, J. J.; Zellman, S.; Puri, A.; Aronson, M. C.

    2015-07-24

    We report the discovery of CaMn2Al10, a metal with strong magnetic anisotropy and moderate electronic correlations. Magnetization measurements find a Curie-Weiss moment of 0.83μB/Mn, significantly reduced from the Hund's rule value, and the magnetic entropy obtained from specific heat measurements is correspondingly small, only ≈ 9% of Rln2. These results imply that the Mn magnetism is highly itinerant, a conclusion supported by density functional theory calculations that find strong Mn-Al hybridization. Consistent with the layered nature of the crystal structure, the magnetic susceptibility χ is anisotropic below 20 K, with a maximum ratio of χ[010]/χ[001] ≈ 3.5. A strong power-lawmore » divergence χ(T) ~ T–1.2 below 20 K implies incipient ferromagnetic order, an Arrott plot analysis of the magnetization suggests a vanishing low Curie temperature TC ~ 0. Our experiments indicate that CaMn2Al10 is a rare example of a system where the weak and itinerant Mn-based magnetism is poised on the verge of order.« less

  4. Influence of interstitial Mn on magnetism in room-temperature ferromagnet Mn(1+delta)Sb

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Taylor, Alice E; Berlijn, Tom; Hahn, Steven E; May, Andrew F; Williams, Travis J; Poudel, Lekhanath N; Calder, Stuart A; Fishman, Randy Scott; Stone, Matthew B; Aczel, Adam A; et al

    2015-01-01

    We report elastic and inelastic neutron scattering measurements of the high-TC ferromagnet Mn(1+delta)Sb. Measurements were performed on a large, TC = 434 K, single crystal with interstitial Mn content of delta=0.13. The neutron diffraction results reveal that the interstitial Mn has a magnetic moment, and that it is aligned antiparallel to the main Mn moment. We perform density functional theory calculations including the interstitial Mn, and find the interstitial to be magnetic in agreement with the diffraction data. The inelastic neutron scattering measurements reveal two features in the magnetic dynamics: i) a spin-wave-like dispersion emanating from ferromagnetic Bragg positions (Hmore » K 2n), and ii) a broad, non-dispersive signal centered at forbidden Bragg positions (H K 2n+1). The inelastic spectrum cannot be modeled by simple linear spin-wave theory calculations, and appears to be significantly altered by the presence of the interstitial Mn ions. The results show that the influence of the int« less

  5. Influence of interstitial Mn on magnetism in room-temperature ferromagnet Mn(1+delta)Sb

    SciTech Connect (OSTI)

    Taylor, Alice E [ORNL; Berlijn, Tom [ORNL; Hahn, Steven E [ORNL; May, Andrew F [ORNL; Williams, Travis J [ORNL; Poudel, Lekhanath N [ORNL; Calder, Stuart A [ORNL; Fishman, Randy Scott [ORNL; Stone, Matthew B [ORNL; Aczel, Adam A [ORNL; Cao, Huibo [ORNL; Lumsden, Mark D [ORNL; Christianson, Andrew D [ORNL

    2015-01-01

    We report elastic and inelastic neutron scattering measurements of the high-TC ferromagnet Mn(1+delta)Sb. Measurements were performed on a large, TC = 434 K, single crystal with interstitial Mn content of delta=0.13. The neutron diffraction results reveal that the interstitial Mn has a magnetic moment, and that it is aligned antiparallel to the main Mn moment. We perform density functional theory calculations including the interstitial Mn, and find the interstitial to be magnetic in agreement with the diffraction data. The inelastic neutron scattering measurements reveal two features in the magnetic dynamics: i) a spin-wave-like dispersion emanating from ferromagnetic Bragg positions (H K 2n), and ii) a broad, non-dispersive signal centered at forbidden Bragg positions (H K 2n+1). The inelastic spectrum cannot be modeled by simple linear spin-wave theory calculations, and appears to be significantly altered by the presence of the interstitial Mn ions. The results show that the influence of the int

  6. Opti-MN Impact House Presentation | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Opti-MN Impact House Presentation Opti-MN Impact House Presentation Opti-MN was the Grand Winner of the 2015 Race to Zero Student Design Competition. View the presentation for the Opti-MN Impact House below. Read a full list of the winning teams. PDF icon Opti-MN Presentation More Documents & Publications 2015 Race to Zero Competition Grand Winner and Grand Winner Finalist Team Submissions 2014 Race to Zero Student Design Competition: University of Minnesota Profile 2015 Race to Zero

  7. Unexpected crystal and magnetic structures in MnCu4In and MnCu4Sn

    SciTech Connect (OSTI)

    Provino, A.; Paudyal, D.; Fornasini, ML; Dhiman, I.; Dhar, SK.; Das, A.; Mudryk, Y.; Manfrinetti, P.; Pecharsky, VK

    2013-01-29

    We discovered a new compound MnCu4In with its own hexagonal structure type (hP12-P63mc, ternary ordered derivative of the hexagonal MgZn2-type) that becomes ferromagnetic at TC = 540 K. This transition temperature is higher than that found in the MnCu2In and MnCu2Sn alloys. In contrast, the homologous compound MnCu4Sn, which crystallizes in the cubic MgCu4Sn-type, orders antiferromagnetically with TN = 110 K. The neutron diffraction studies show ferromagnetic spin orientation in the {1 0 1} plane in MnCu4In with a magnetic moment of 4.5 ?B/Mn at 22 K, and a corresponding value of 4.7 ?B/Mn in the antiferromagnetic MnCu4Sn with propagation vector View the MathML source. The first-principles electronic structure calculations show that the unexpected difference in both magnetic and crystal structures of MnCu4In and MnCu4Sn is due to the difference in the Mn-3d bands and exchange interactions relating to different crystal anisotropy, coordination numbers, and interatomic distances.

  8. Stockpile Stewardship: Los Alamos

    ScienceCinema (OSTI)

    McMillan, Charlie; Morgan, Nathanial; Goorley, Tom; Merrill, Frank; Funk, Dave; Korzekwa, Deniece; Laintz, Ken

    2014-08-12

    "Heritage of Science" is a short video that highlights the Stockpile Stewardship program at Los Alamos National Laboratory. Stockpile Stewardship was conceived in the early 1990s as a national science-based program that could assure the safety, security, and effectiveness of the U.S. nuclear deterrent without the need for full-scale underground nuclear testing. This video was produced by Los Alamos National Laboratory for screening at the Lab's Bradbury Science Museum in Los Alamos, NM and is narrated by science correspondent Miles O'Brien.

  9. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    70th anniversary app for iPhone, iPads June 5, 2013 LOS ALAMOS, N.M., June 4, 2013-Los Alamos National Laboratory has launched its first app for iPhones and iPads as part of the Laboratory's yearlong celebration of 70 years serving the nation. The free application is available from the Apple Store (search for Los Alamos National Lab). The app enables users to learn more about the Laboratory's national security mission, cutting edge research, unique history, top-flight scientists and the many

  10. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Star Status recognition for safety excellence from Department of Energy October 8, 2014 Lab largest site in DOE complex to attain Star level LOS ALAMOS, N.M., Oct. 8, 2014-Los Alamos National Laboratory has received Star- level recognition from the Department of Energy as part of DOE's Voluntary Protection Program (VPP). Los Alamos becomes the largest site in the DOE complex to receive VPP Star Status. "Hazards are part of our everyday work and achieving VPP Star recognition validates the

  11. Los Alamos, NASA

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Unusual light in dark space revealed by Los Alamos, NASA November 7, 2014 Near-infrared data could change the way we think about galaxies LOS ALAMOS, N.M., Nov. 7, 2014-By looking at the dark spaces between visible galaxies and stars the NASA/JPL CIBER sounding rocket experiment has produced data that could redefine what constitutes a galaxy. "What was very surprising is the brightness of many fluctuations that appear between stars and galaxies," said Los Alamos scientist Joseph Smidt,

  12. Stockpile Stewardship: Los Alamos

    SciTech Connect (OSTI)

    McMillan, Charlie; Morgan, Nathanial; Goorley, Tom; Merrill, Frank; Funk, Dave; Korzekwa, Deniece; Laintz, Ken

    2012-01-26

    "Heritage of Science" is a short video that highlights the Stockpile Stewardship program at Los Alamos National Laboratory. Stockpile Stewardship was conceived in the early 1990s as a national science-based program that could assure the safety, security, and effectiveness of the U.S. nuclear deterrent without the need for full-scale underground nuclear testing. This video was produced by Los Alamos National Laboratory for screening at the Lab's Bradbury Science Museum in Los Alamos, NM and is narrated by science correspondent Miles O'Brien.

  13. Los Alamos National Laboratory

    Broader source: Energy.gov [DOE]

    HISTORYLos Alamos National Laboratory (LANL) is located in Los Alamos County in north central New Mexico (NM). LANL, founded in 1943 during World War II as Project Y, served as a secret facility...

  14. Los Alamos Employees' Scholarship

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    silver scholarships: Kathy Lin of Los Alamos High School, Ian McMahon of Monte del Sol in Santa Fe, and Dennis Trujillo of McCurdy School in Espaola. And two students are...

  15. Los Alamos NATIONAL LABORATORY

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    / Los Alamos NATIONAL LABORATORY - - - - EST.1943 ....,,..... _ _ _ memorandum E ter Management ' . McMillan, DIR, AIOO -5101/Fax 7-2997 Office of the Director DIR-15-094 July 23, 2015 SUBJECT: SUBCONTRACTING OPPORTUNITIES WITH SMALL BUSINESS Los Alamos National Laboratory has maintained a strong institutional commitment to small business subcontracting over the years. It is my intention that we continue this commitment, which was formalized in the Prime Contract Appendix M provision for a

  16. Los Alamos National Laboratory

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    April 13 construction forum in Albuquerque April 7, 2009 LOS ALAMOS, New Mexico, April 7, 2009- Companies big and small can learn about upcoming construction projects and procurement opportunities at Los Alamos National Laboratory by attending a construction forum April 13 at the Hotel Albuquerque, 800 Rio Grande Blvd. N.W., in Albuquerque's Old Town. "The forum is designed to provide key information about Laboratory construction business opportunities. We want interested businesses to have

  17. Los Alamos National Laboratory

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    captures eight NNSA Pollution Prevention awards April 15, 2009 LOS ALAMOS, New Mexico, April 15, 2009-Los Alamos National Laboratory employee teams and organizations earned eight 2009 Pollution Prevention awards from the National Nuclear Security Administration (NNSA). The awards are based on an NNSA-wide competition that acknowledges pollution prevention, recycling, and affirmative procurement accomplishments. The Laboratory also received a Department of Energy "E Star" award for its

  18. Los Alamos National Laboratory

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    Hazmat Challenge July 27, 2009 Competition test skills of hazardous materials response teams Los Alamos, New Mexico, July 27, 2009-Seven hazardous materials response teams from New Mexico and Oklahoma will test their skills at the 13th annual Hazmat Challenge July 28-31 sponsored by Los Alamos National Laboratory. The challenge provides hazardous materials responders the opportunity to network and learn new techniques under realistic conditions in a safe environment. Held at the Laboratory's

  19. Los Alamos National Laboratory

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    scientists will codirect $14.5 million National Center for Systems Biology July 28, 2009 Lab contributes computer modeling, antibody engineering capabilities Los Alamos, New Mexico, July 28, 2009- Los Alamos National Laboratory scientists will codirect a new National Center for Systems Biology located at the University of New Mexico in Albuquerque. The new Spatiotemporal Modeling Center (STMC) is funded by a $14.5 million, five- year grant from the National Institute for General Medical Sciences

  20. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    communicators capture numerous awards from Society for Technical Communication April 15, 2010 Recognizing outstanding technical communications products LOS ALAMOS, New Mexico, April 15, 2010-Los Alamos National Laboratory employees received a number of awards in the 2009 Technical Publications and Online Communication competition sponsored by the East Tennessee chapter of the Society for Technical Communication (STC). - 2 - Laboratory entries competed at a regional, national and international

  1. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    participates in National Lab Day to increase awareness of science across the nation April 29, 2010 Events planned May 4-5 at Bradbury Science Museum LOS ALAMOS, New Mexico, April 29, 2010-Connecting teachers and students with scientists, engineers, mathematicians, and industry professionals across the country is the goal of National Lab Day, a year-round initiative spearheaded by President Obama. Los Alamos National Laboratory is joining other Department of Energy labs and several other

  2. Los Alamos National Laboratory

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    acknowledged for progress in safety excellence by Department of Energy August 4, 2010 Lab is awarded VPP Merit status LOS ALAMOS, New Mexico, August 4, 2010-Los Alamos National Laboratory has received Merit-level recognition from the Department of Energy as part of DOE's Voluntary Protection Program (VPP). Merit is a status for DOE contractors with highly effective safety programs who commit themselves to attain Star status within a five-year period. Star recognition is the highest achievement

  3. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    purchases nearly $1 billion in goods and services last fiscal year December 6, 2010 Surpasses goals for small business procurements LOS ALAMOS, New Mexico, December 6, 2010-Los Alamos National Laboratory purchased nearly $1 billion in goods and services in the 2010 fiscal year ending September 30, 2010. The $925 million in purchases was helped in part by funding from the American Reinvestment and Recovery Act the Laboratory received for environmental remediation and basic research.The Laboratory

  4. Los Alamos National Laboratory

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    4th Hazmat Challenge July 22, 2010 Competition tests skills of hazardous materials response teams LOS ALAMOS, New Mexico, July 22, 2010-Fourteen hazardous materials response teams from New Mexico and Oklahoma will test their skills at the 14th annual Hazmat Challenge July 27-30 sponsored by Los Alamos National Laboratory. The challenge provides hazardous materials responders the opportunity to network and learn new techniques under realistic conditions in a safe environment. Held at the

  5. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Department of Energy environmental sustainability award October 14, 2010 LOS ALAMOS, New Mexico, October 14, 2010-Los Alamos National Laboratory recently received an Environmental Sustainability (EStar) award from the Department of Energy for integrating sustainable practices in its design for the Radiological Laboratory/ Utility/Office Building (RLUOB). The RLUOB is part of the Lab's Chemistry and Metallurgy Research Replacement (CMRR) Project. The Lab ultimately expects to achieve Leadership

  6. Los Alamos National Laboratory

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    6th Hazmat Challenge July 31, 2012 Competition tests skills of hazardous materials response teams LOS ALAMOS, New Mexico, July 31, 2012 What: Los Alamos National Laboratory (LANL) hosts 16th annual Hazmat Challenge. Who: Fifteen hazardous materials response teams from New Mexico, Texas, Missouri and Oklahoma respond to simulated hazardous materials emergencies such as a rail car, a clandestinelaboratory, transportation and industrial piping scenarios, a simulated radiological release, and more.

  7. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    celebrates 1000th transuranic waste shipment June 26, 2012 LOS ALAMOS, New Mexico, June 26, 2012-Federal, state, and county officials gathered at Los Alamos National Laboratory today to celebrate the 1000th shipment of transuranic waste from the Laboratory to a permanent repository at the Waste Isolation Pilot Plant near Carlsbad, N.M. The event, which fell on the first anniversary of the Las Conchas forest fire, featured remarks from New Mexico Governor Susana Martinez. "On the anniversary

  8. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    strategy for long-term environmental sustainability March 1, 2013 Blueprint for planning work activities with the environment in mind LOS ALAMOS, N.M., March 1, 2013-The Department of Energy and Los Alamos National Laboratory have developed a long-term strategy for environmental stewardship and sustainability that provides a blueprint for protecting the environment while accomplishing the Laboratory's national security missions. "This plan represents a significant amount of effort on the

  9. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    May 14, 2013 Value of up to $150 million over five years LOS ALAMOS, N.M., May 14, 2013-Los Alamos National Laboratory has awarded a master task order agreement in which three small businesses will compete for environmental work worth up to $150 million over five years. The businesses each have offices in northern New Mexico. The agreement is for technical services for the Laboratory's Environmental Programs directorate and includes work such as environmental engineering design, regulatory

  10. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    September 23, 2013 Value of up to $400 million over five years LOS ALAMOS, N.M., Sept. 23, 2013-Los Alamos National Laboratory has awarded master task order agreements to three small businesses for environmental support services work worth up to $400 million within a five-year period. The businesses were selected based on a technical proficiency and lowest price basis. The companies-Terranear PMC, Navarro Research and Engineering, Inc. and Portage, Inc.-were chosen from 11 prospective bidders.

  11. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    second Presidential Award as a climate champion December 8, 2015 LOS ALAMOS, N.M., Dec. 8, 2015-In recognition of their proactive commitment to protecting the environment of Northern New Mexico from the potential impacts of a changing climate, a consortium of Los Alamos National Laboratory's federal and contractor staff received the GreenGov Presidential Award on Nov. 30. "We recognized the need for a different approach after a devastating wildfire and a series of impactful environmental

  12. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos National Laboratory 3 National Security Science July 2015 Films of the U.S. atmospheric nuclear tests provide breathtaking reminders of the power of nuclear weapons. Now a new project is salvaging and mining these deteriorating films for fresh-and crucial- scientific data about the weapons' yields. To understand why Lawrence Livermore National Laboratory nuclear weapons physicist Greg Spriggs is spearheading, in partnership with Los Alamos, an urgent search-and-rescue mission to

  13. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos National Laboratory i Table of Contents Letter from the Division Director 1 Innovation Prize Nominations 2 Innovation Prize Winner 5 About the Feynman Center for Innovation 6 Innovation Assets 7 Strategic Sponsored Work 8 National High Magnetic Field Laboratory 9 Licensing 10 SOLVE 11 Economic Development 12 STAR Cryoelectronics 13 Partnership 14 Verdesian Life Sciences 15 R&D 100 Awards 16 Federal Laboratory Consortium Awards 17 Los Alamos National Laboratory 1 As scientists and

  14. Los Alamos physicist Hockaday

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Hockaday honored for national security contributions December 9, 2014 LOS ALAMOS, N.M., Dec. 9, 2014-Associate Director for Experimental Physical Sciences Mary Hockaday of Los Alamos National Laboratory is the recipient of two significant honors this week. She earned a 2014 fellowship from the Association for the Advancement of Science (AAAS) and also a Distinguished Alumni Award from the New Mexico State University (NMSU) Alumni Association. "I have been truly surprised, humbled and

  15. Los Alamos National Security LLC Selected to Manage Los Alamos...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    the management and operations contractor for Los Alamos National Laboratory in New Mexico. ... Los Alamos community and state of New Mexico since it will guarantee the lab will ...

  16. [Los Alamos National Laboratory]; Durakiewicz, Tomasz [Los Alamos...

    Office of Scientific and Technical Information (OSTI)

    Time-resolved carrier distributions in graphene Gilbertson, Steve Michael Los Alamos National Laboratory; Durakiewicz, Tomasz Los Alamos National Laboratory; Zhu, Jian - Xin...

  17. LOS ALAMOS, New Mexico, October 11, 2011-Los Alamos National...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Ad Building demolition, recycling completed October 11, 2011 Project finished under budget, ahead of schedule LOS ALAMOS, New Mexico, October 11, 2011-Los Alamos National...

  18. Los Alamos National Laboratory - Los Alamos Canyon | Department...

    Office of Environmental Management (EM)

    - Los Alamos Canyon January 1, 2014 - 12:00pm Addthis US Department of Energy Groundwater Database Groundwater Master Report Installation Name, State: Los Alamos National...

  19. LOS ALAMOS, New Mexico, September 1, 2010-Los Alamos National...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2010 Buildings would replace existing facilities at Technical Area 54 LOS ALAMOS, New Mexico, September 1, 2010-Los Alamos National Laboratory today announced it has obtained...

  20. LOS ALAMOS, New Mexico, December 16, 2010-Los Alamos National...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2010 New LANL marks set for field investigations, shipments to WIPP LOS ALAMOS, New Mexico, December 16, 2010-Los Alamos National Laboratory finished 12 months worth of...

  1. Upper Los Alamos Canyon Cleanup

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Upper Los Alamos Canyon Cleanup Upper Los Alamos Canyon Cleanup The Upper Los Alamos Canyon Project involves cleaning up hazardous materials left over from some of the Laboratory's earliest activities. Contact Environmental Communication & Public Involvement P.O. Box 1663 MS M996 Los Alamos, NM 87545 (505) 667-0216 Email Located along Los Alamos Canyon from 7th Street to the Pajarito Ski Hill, the Upper Los Alamos Canyon Project involves examining sites in present and former Laboratory

  2. Los Alamos National Laboratory attracts

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    About Los Alamos National Laboratory Los Alamos National Laboratory, a multidisciplinary research institution engaged in strategic science on behalf of national...

  3. Magnetic properties of ??MnO{sub 2} and Co-doped ??MnO{sub 2} nanowires

    SciTech Connect (OSTI)

    Stella, C. Soundararajan, N. Ramachandran, K.

    2014-04-24

    ??MnO{sub 2} and Co-doped ??MnO{sub 2} nanowires (NWs) were synthesized by hydrothermal method. The structural characterization by XRD revealed the tetragonal structure of ??MnO{sub 2}. The formation of one dimensional (1D) NWs of pure and Co-doped ??MnO{sub 2} was confirmed from SEM. From UV-Vis absorption spectra, it is found that both pure and Co-doped ??MnO{sub 2} NWs showed blue shift compared to bulk, which revealed the quantum confinement in the synthesized samples. The magnetic properties were analyzed by VSM, which suggest that pure and doped ??MnO{sub 2} exhibit ferromagnetic behavior at room temperature (RT)

  4. Spin caloritronics in graphene with Mn

    SciTech Connect (OSTI)

    Torres, Alberto Lima, Matheus P. Fazzio, A.; Silva, Antnio J. R. da

    2014-02-17

    We show that graphene with Mn adatoms trapped at single vacancies features spin-dependent Seebeck effect, thus enabling the use of this material for spin caloritronics. A gate potential can be used to tune its thermoelectric properties in a way it presents either a total spin polarized current, flowing in one given direction, or currents for both spins flowing in opposite directions without net charge transport. Moreover, we show that the thermal magnetoresistance can be tuned between ?100% and +100% by varying a gate potential.

  5. Los Alamos Patents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos Patents Los Alamos Patents Our research has led to over 1,000 U.S. patents granted, and more globally. Explore a snapshot of our patent portfolio below. Contact thumbnail of Marcus Lucero Head of Licensing Marcus Lucero Richard P. Feynman Center for Innovation (505) 665-6569 Email Disclaimer This list is reviewed and updated quarterly. Some patents may no longer be maintained or available for licensing. This list includes, but may not be all inclusive of, U.S. patents granted in or

  6. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    remembers former director Harold Agnew September 30, 2013 Manhattan Project pioneer was LANL director from 1970-1979 LOS ALAMOS, N.M., Sept. 30, 2013-Los Alamos National Laboratory Director Charlie McMillan today remembered Harold Agnew as a national treasure who transformed the Laboratory into what it is in the 21st century. "His contributions to the Laboratory made us the institution we are today," McMillan said. "It was his vision - decades ago - that recognized that national

  7. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    resumes transuranic waste shipments April 2, 2014 Shipments keep Lab on track to complete 3706 Campaign on schedule LOS ALAMOS, N.M., April 2, 2014-Los Alamos National Laboratory resumed shipments of transuranic waste yesterday from Technical Area 54 Area G. The shipments are part of an accelerated shipping campaign to remove 3,706 cubic meters of transuranic waste stored aboveground at Area G by June 30, 2014. Nearly 3,200 cubic meters of the waste have already been removed since the 3706

  8. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    pledge $2.17 million in 2015 giving campaign November 25, 2014 More than 250 nonprofits, social service providers will benefit LOS ALAMOS, N.M., Nov. 25, 2014-The work of more than 250 community and social service organizations will benefit from the more than $2.17 million pledged by Los Alamos National Laboratory employees to United Way and other nonprofits during the Laboratory's 2015 Employee Giving Campaign. "We are proud to help the many community focused non-profit organizations

  9. Los Alamos National Laboratory's

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Bradbury Science Museum scares up Halloween fun October 25, 2010 LOS ALAMOS, New Mexico, October 25, 2010-When does science get spooktacular? To find out, climb into your costume and head on over to Los Alamos National Laboratory's Bradbury Science Museum for "High-Tech Halloween!" Back for its 17th year, the creepy educational event is from 4 to 7 p.m. October 29. Long-time staffers call High-Tech Halloween the museum's largest single-day draw. "Last year, about 2,300 visitors

  10. Los Alamos National Security awards

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    protective force contract for Los Alamos National Laboratory to SOC Los Alamos October 28, 2010 Culmination of a competitive process LOS ALAMOS, New Mexico, October 28, 2010-SOC LLC has been awarded a new contract under which it will provide protective force services at the National Nuclear Security Administration's Los Alamos National Laboratory. The contract is for three years with two one-year extension options and has a value of about $251 million. SOC LLC, operating as SOC Los Alamos, has

  11. Magnetic Moment Enhancement for Mn7 Cluster on Graphene

    SciTech Connect (OSTI)

    Liu, Xiaojie; Wang, Cai-Zhuang; Lin, Hai-Qing; Ho, Kai-Ming

    2014-08-21

    Mn7 cluster on graphene with different structural motifs and magnetic orders are investigated systematically by first-principles calculations. The calculations show that Mn7 on graphene prefers a two-layer motif and exhibits a ferrimagnetic coupling. The magnetic moment of the Mn7 cluster increases from 5.0 ?B at its free-standing state to about 6.0 ?B upon adsorption on graphene. Mn7 cluster also induces about 0.3 ?B of magnetic moment in the graphene layer, leading to an overall enhancement of 1.3 ?B magnetic moment for Mn7 on graphene. Detail electron transfer and bonding analysis have been carried out to investigate the origin of the magnetic enhancement.

  12. Los Alamos National Security awards protective force contract for Los

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Alamos National Laboratory to SOC Los Alamos Protective force contract awarded to SOC Los Alamos Los Alamos National Security awards protective force contract for Los Alamos National Laboratory to SOC Los Alamos The contract is for three years with two one-year extension options and has a value of about $251 million. October 28, 2010 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation

  13. Los Alamos Dynamics Application

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    Los Alamos Dynamics Summer School Application Form Do not use MAC Preview tool to edit this form as it corrupts the data. Application deadline is January 10, 2016 5:00 PM (US Mountain Standard) A complete application package includes: * This Application Form * Cover Letter - Page cover letter describing your interest in this summer school and multi-disciplinary cyber- physical dynamic systems research as well as your near term (1-3 year) academic and professional goals. * CV (resume) * One (1)

  14. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    7th annual Hazmat Challenge July 23, 2013 Competition tests skills of hazardous materials response teams from three states Editor's Note: News media representatives interested in attending the Hazmat Challenge can contact the Laboratory's Communications Office at 505-667-7000 to coordinate travel to the site. LOS ALAMOS, N.M., July 23, 2013-Twelve hazardous materials response teams from New Mexico, Missouri and Oklahoma will test their skills at the 17th annual Hazmat Challenge July 30 through

  15. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    8th annual Hazmat Challenge July 23, 2014 Competition tests skills of hazardous materials response teams from four states Editor's Note: News media representatives interested in attending the Hazmat Challenge can contact the Laboratory's Communications Office at 505-667-7000 to coordinate travel to the site. LOS ALAMOS, N.M., July 24, 2014-Fourteen hazardous materials response teams from New Mexico, Missouri, Nebraska and Oklahoma will test their skills at the 18 th annual Hazmat Challenge July

  16. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    9th annual Hazmat Challenge July 23, 2015 Competition tests skills of hazardous materials response teams from three states Editor's Note: News media representatives interested in attending the Hazmat Challenge can contact the Laboratory's Communications Office at (505) 667-7000 to coordinate travel to the site. LOS ALAMOS, N.M., July 23, 2015-Twelve hazardous materials response teams from New Mexico, Missouri and Nebraska test their skills in a series of graded, timed exercises at the 19 th

  17. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos National Laboratory For Lawrence Livermore National Laboratory's weapon-physicist Greg Spriggs, leader of the Film Scanning and Reanalysis Project, the work has become a search-and-rescue mission. He has to find thousands of scientific test films and digitize them before they deteriorate beyond usefulness. Lost and Found Old and imprecise records told Spriggs how many original films there were, but not where they were. In fact, they were stored in several different archives. He has

  18. Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ii Judicial Science School * Los Alamos National Laboratory * UCSD Jacobs School of Engineering Foreword Scientific evidence is introduced in our courts with increasing frequency and greater complexity, which requires judges to have a better understanding of science. Preparing judges to competently rule on the admissibility of scientific evidence represents a new challenge in judicial education. The role of uncertainty in science requires special attention. What better way to educate judges

  19. Los Alamos ScienceFest

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos ScienceFest Los Alamos ScienceFest WHEN: Jul 16, 2015 12:00 AM - Jul 18, 2015 6:00 PM WHERE: Los Alamos, New Mexico CONTACT: Jessica Privette 505 667-0375 CATEGORY: Bradbury INTERNAL: Calendar Login Los Alamos ScienceFest July 16-18, 2015 Event Description A 3-day science festival running July 16-18, 2015 Bradbury Events @ Los Alamos ScienceFest Join us during Los Alamos ScienceFest!-a 3-day festival of interactive demonstrations, hands-on activities and dynamic speakers meant to

  20. LOS ALAMOS, New Mexico, OCTOBER 18, 2010-Los Alamos National...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Consortium to design human trials of mosaic HIV vaccine October 18, 2010 LOS ALAMOS, New Mexico, OCTOBER 18, 2010-Los Alamos National Laboratory researcher Bette Korber is part of...

  1. Van Andel Research Institute, Los

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos National Laboratory to develop detailed computational model to study lung cancer September 14, 2015 LOS ALAMOS, N.M., Sept. 14, 2015-Scientists are developing a new...

  2. Los Alamos | Department of Energy

    Energy Savers [EERE]

    Los Alamos Los Alamos Administrative Order Requiring Compliance and Assessing Civil Penalty U.S. Department of Energy's Request for Hearing and Answer to Administrative Order Requiring Compliance and Assessing Civil Penalty

  3. Inverse spin Hall effect in Pt/(Ga,Mn)As

    SciTech Connect (OSTI)

    Nakayama, H.; Chen, L.; Chang, H. W.; Ohno, H.; Matsukura, F.

    2015-06-01

    We investigate dc voltages under ferromagnetic resonance in a Pt/(Ga,Mn)As bilayer structure. A part of the observed dc voltage is shown to originate from the inverse spin Hall effect. The sign of the inverse spin Hall voltage is the same as that in Py/Pt bilayer structure, even though the stacking order of ferromagnetic and nonmagnetic layers is opposite to each other. The spin mixing conductance at the Pt/(Ga,Mn)As interface is determined to be of the order of 10{sup 19 }m{sup −2}, which is about ten times greater than that of (Ga,Mn)As/p-GaAs.

  4. Los Alamos National Security awards

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    grants to 24 nonprofits in Northern New Mexico February 5, 2009 LOS ALAMOS, New Mexico, February 5, 2009 - Local nonprofit organizations that benefit from volunteer efforts by employees of Los Alamos National Laboratory received an additional assist: $265,000 in special one-time Community Giving grants from Los Alamos National Security, LLC (LANS), the company that manages the Laboratory. Twenty-four nonprofit organizations from Los Alamos, Española, Taos, Santa Fe, Albuquerque, and Carlsbad

  5. Los Alamos National Security supports

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    supports community nonprofits June 1, 2009 Recognition event Tuesday at Fuller Lodge LOS ALAMOS, New Mexico, June 1, 2009 - Nonprofit organizations are receiving more than $80,300 from Los Alamos National Security, LLC as a result of the volunteer efforts of Los Alamos National Laboratory employees and retirees. A recognition event is scheduled for 10 a.m. Tuesday (June 2) at Fuller Lodge in downtown Los Alamos. Deputy Laboratory Director Isaac "Ike" Richardson is scheduled to make

  6. CASL - Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos National Laboratory Los Alamos, NM A world-class, multi-disciplinary research and development institution focused on national security missions, Los Alamos brings to CASL particular strengths in computational and material sciences. Fission and fusion energy Advanced materials Nuclear radiation technologies Science policy Key Contributions Materials science and multiscale leadership Models and numerical methods leadership Advanced computational architectures Advanced code development

  7. DOE - Office of Legacy Management -- Twin Cities Ammunition - MN 0-01

    Office of Legacy Management (LM)

    Twin Cities Ammunition - MN 0-01 FUSRAP Considered Sites Site: TWIN CITIES AMMUNITION (MN.0-01) Eliminated from further consideration under FUSRAP - Referred to DOD Designated Name: Not Designated Alternate Name: None Location: New Brighton , Minnesota MN.0-01-1 Evaluation Year: 1987 MN.0-01-2 Site Operations: Site was formerly licensed under 10CFR 70 by the NRC. MN.0-01-1 MN.0-01-2 Site Disposition: Eliminated - No Authority - Referred to DOD MN.0-01-1 Radioactive Materials Handled: None

  8. NaNi sub 3 Mn sub 2 alloy as a tritium storage material

    SciTech Connect (OSTI)

    Ide, T.; Okuno, K.; Konishi, S.; Sakai, F.; Fukui, H.; Enoeda, M.; Naruse, Y.; Anderson, J.L.; Bartlit, J.R.; Los Alamos National Lab., NM )

    1989-01-01

    An all metal apparatus has been constructed and installed in the main cell of the Tritium System Assembly (TSTA) at Los Alamos National Laboratory, as a separate experiment, to handle about 2600 Ci of tritium for study of metal tritides of potential application for storing tritium in fusion fuel processing. The apparatus is similar to that used for protium/deuterium gas but some modifications were made to assure safe handling of tritium. The pressure-composition isotherms for the LaNi{sub 3}Mn{sub 2}-protium (H), deuterium (D) and tritium (T) system were measured to study isotopic effects in the temperature range of 60 {degree}C to 250 {degree}C, the pressure range below 120 kPa. 2 refs., 10 figs.

  9. Unoccupied electronic states of icosahedral Al-Pd-Mn quasicrystals:

    Office of Scientific and Technical Information (OSTI)

    Evidence of image potential resonance and pseudogap (Journal Article) | DOE PAGES Unoccupied electronic states of icosahedral Al-Pd-Mn quasicrystals: Evidence of image potential resonance and pseudogap « Prev Next » Title: Unoccupied electronic states of icosahedral Al-Pd-Mn quasicrystals: Evidence of image potential resonance and pseudogap Authors: Maniraj, M. ; Rai, Abhishek ; Barman, S. R. ; Krajčí, M. ; Schlagel, D. L. ; Lograsso, T. A. ; Horn, K. Publication Date: 2014-09-05 OSTI

  10. Independent Oversight Review, Los Alamos National Laboratory...

    Energy Savers [EERE]

    Los Alamos National Laboratory - January 2013 Independent Oversight Review, Los Alamos National Laboratory - January 2013 January 2013 Review of the Los Alamos National Laboratory...

  11. Independent Oversight Assessment, Los Alamos National Laboratory...

    Office of Environmental Management (EM)

    Los Alamos National Laboratory - April 2012 Independent Oversight Assessment, Los Alamos National Laboratory - April 2012 April 2012 Assessment of Nuclear Safety Culture at the Los...

  12. Los Alamos National Laboratory

    SciTech Connect (OSTI)

    Dogliani, Harold O [Los Alamos National Laboratory

    2011-01-19

    The purpose of the briefing is to describe general laboratory technical capabilities to be used for various groups such as military cadets or university faculty/students and post docs to recruit into a variety of Los Alamos programs. Discussed are: (1) development and application of high leverage science to enable effeictive, predictable and reliability outcomes; (2) deter, detect, characterize, reverse and prevent the proliferation of weapons of mass destruction and their use by adversaries and terrorists; (3) modeling and simulation to define complex processes, predict outcomes, and develop effective prevention, response, and remediation strategies; (4) energetic materials and hydrodynamic testing to develop materials for precise delivery of focused energy; (5) materials cience focused on fundamental understanding of materials behaviors, their quantum-molecular properties, and their dynamic responses, and (6) bio-science to rapidly detect and characterize pathogens, to develop vaccines and prophylactic remedies, and to develop attribution forensics.

  13. Los Alamos National Laboratory Los Alamos, New Mexico

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Applauding our innovators The 2005 Patent & Licensing Awards Carrying on the tradition of world-changing innovation Thursday, February 23, 2006 Los Alamos National Laboratory Los Alamos, New Mexico elcome to the eighth Annual Patent and Licensing Awards Reception! We are here this evening to honor our Laboratory innovators for the impressive collection of copyrighted, patented, and licensed technologies assembled at Los Alamos. While these recognized technologies represent the broad

  14. Los Alamos National Security, LLC Los Alamos National Laboratory (LANL)

    Office of Environmental Management (EM)

    Voluntary Protection Program (VPP) Assessment | Department of Energy Security, LLC Los Alamos National Laboratory (LANL) Voluntary Protection Program (VPP) Assessment Los Alamos National Security, LLC Los Alamos National Laboratory (LANL) Voluntary Protection Program (VPP) Assessment The documents included in this listing are additional references not included in the Phase 2 Radiological Release at the Waste Isolation Pilot Plant, Attachment F: Bibliography and References report. The

  15. Other Locales W. Clements Los Alamos National Laboratory Los...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    in the tropical warm pool region roughly between Figure 1. Primary CART Locales 145 ARM Science Team Meeting .Site Program Manager: Bill Clements, Los Alamos National Laboratory...

  16. Los Alamos National Laboratory Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    way. Together, Los Alamos National Laboratory (LANL) and EMC, are enhancing, designing, building, testing and deploying new cutting-edge technologies in an effort to meet some of...

  17. LOS ALAMOS, New Mexico, December 21, 2011-Los Alamos National...

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    high performance computing, data storage, cyber security, cloud computing, analytics, materials science and data sharing, and mobility LOS ALAMOS, New Mexico, December 21,...

  18. CaMn2Al10: Itinerant Mn magnetism on the verge of magnetic order

    SciTech Connect (OSTI)

    Steinke, L.; Simonson, J. W.; Yin, W. -G.; Smith, G. J.; Kistner-Morris, J. J.; Zellman, S.; Puri, A.; Aronson, M. C.

    2015-07-24

    We report the discovery of CaMn2Al10, a metal with strong magnetic anisotropy and moderate electronic correlations. Magnetization measurements find a Curie-Weiss moment of 0.83?B/Mn, significantly reduced from the Hund's rule value, and the magnetic entropy obtained from specific heat measurements is correspondingly small, only ? 9% of Rln2. These results imply that the Mn magnetism is highly itinerant, a conclusion supported by density functional theory calculations that find strong Mn-Al hybridization. Consistent with the layered nature of the crystal structure, the magnetic susceptibility ? is anisotropic below 20 K, with a maximum ratio of ?[010]/?[001] ? 3.5. A strong power-law divergence ?(T) ~ T1.2 below 20 K implies incipient ferromagnetic order, an Arrott plot analysis of the magnetization suggests a vanishing low Curie temperature TC ~ 0. Our experiments indicate that CaMn2Al10 is a rare example of a system where the weak and itinerant Mn-based magnetism is poised on the verge of order.

  19. Van Andel Research Institute, Los

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Andel Research Institute, Los Alamos National Laboratory to develop detailed computational model to study lung cancer September 14, 2015 LOS ALAMOS, N.M., Sept. 14, 2015-Scientists are developing a new tool to better study one of the deadliest types of lung cancer. A multidisciplinary team, led by Jeffrey MacKeigan, Ph.D., associate professor at Van Andel Research Institute (VARI), in collaboration with William Hlavacek, Ph.D., of Los Alamos National Laboratory, is designing a mathematical model

  20. leaves Los Alamos National Laboratory

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    Final remote-handled waste canister leaves Los Alamos National Laboratory July 2, 2009 Sixteen canisters shipped in one month Los Alamos, New Mexico, July 2, 2009 - Los Alamos National Laboratory officials today announced the safe departure of the Laboratory's 16th and final canister of "remote-handled" radioactive waste destined for the Waste Isolation Pilot Plant (WIPP) near Carlsbad, New Mexico. The Laboratory began shipping the canisters exactly one month ago and averaged four

  1. leaves Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Milestone reached: Waste shipment leaves Los Alamos National Laboratory June 2, 2009 Remote-handled transuranic waste will go to WIPP LOS ALAMOS, New Mexico, June 2, 2009 - Los Alamos National Laboratory officials today announced the departure of the Laboratory's first shipment of a special type of radioactive waste destined for the Waste Isolation Pilot Plant in Carlsbad, New Mexico. The material, known as "remote-handled transuranic waste" (RH-TRU), has been stored at the Laboratory

  2. Los Alamos Dynamics Summer School

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos Dynamics Summer School The Seventeenth Los Alamos Dynamics Summer School School overview and focus. Contact Institute Director Charles Farrar (505) 665-0860 Email Executive Administrator Ellie Vigil (505) 667-2818 Email Administrative Assistant Rebecca Duran (505) 665-8899 Email The Los Alamos Dynamics Summer School is a very selective summer school in which top upper-level US-citizen undergraduate students from universities around the nation attend lectures and work in teams of three

  3. Los Alamos National Security, LLC

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    About » Leadership, Governance » Los Alamos National Security, LLC Los Alamos National Security, LLC (LANS) The Lab's mission is to develop and apply science and technology to ensure the safety, security, and reliability of the U.S. nuclear deterrent; reduce global threats; and solve other emerging national security and energy challenges. Contact LANS, LLC Office (505) 606-0105 Four world-class organizations team to support delivery of NNSA's mission at the Lab Los Alamos National Security,

  4. Los Alamos Dynamics Summer School

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos Dynamics Summer School » Los Alamos Dynamics Summer School The Seventeenth Los Alamos Dynamics Summer School Program Information and Application Process Contact Institute Director Charles Farrar (505) 665-0860 Email Executive Administrator Ellie Vigil (505) 667-2718 Email Administrative Assistant Rebecca Duran (505) 665-8899 Email How to Apply Students should email the following documents to LADSSApply@lanl.gov Application Form (pdf) A one-page cover letter describing your interest

  5. Los Alamos National Laboratory again

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    May 14, 2009 LOS ALAMOS, New Mexico, May 14, 2009-Employees of Los Alamos National Laboratory for the eighth consecutive year are the largest contributors to the United Way of Santa Fe County's annual giving campaign. Laboratory employees and Los Alamos National Security, LLC (LANS, the company that manages the Lab for the National Nuclear Security Administration) donated $170,000 to the United Way of Santa Fe County's 2008-2009 giving campaign. The Laboratory, LANS, and Lab's Community Programs

  6. Los Alamos National Laboratory again

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    July 1, 2010 Lab, LANS to receive Top Workplace Contributor Award LOS ALAMOS, New Mexico, July 1, 2010-Employees of Los Alamos National Laboratory for the ninth consecutive year are the largest contributors to the United Way of Santa Fe County's annual giving campaign. Laboratory employees and Los Alamos National Security, LLC (LANS, the company that manages the Lab for the National Nuclear Security Administration) donated $113,000 to the United Way of Santa Fe County's 2009-2010 giving

  7. Los Alamos National Laboratory awards

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    awards subcontracts for architectural and engineering services August 28, 2009 Northern New Mexico small businesses to provide services Los Alamos, New Mexico, August 28, 2009-Six small businesses are receiving subcontracts totaling up to $200 million for providing architectural and engineering services to Los Alamos National Laboratory.The small businesses receiving the subcontracts from Los Alamos National Security, LLC are Lopez Engineering, Inc.; Merrick & Company; Mosaic-STC, A Joint

  8. Los Alamos National Laboratory opens

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    opens new waste repackaging facility March 7, 2013 Box line facility is largest of its kind ever built LOS ALAMOS, N. M., March 7, 2013-Los Alamos National Laboratory has brought a third waste repackaging facility online to increase its capability to process nuclear waste for permanent disposal. The "375 box line facility" enables Los Alamos to repackage transuranic (TRU) waste stored in large boxes. Built inside a dome once used to house containers of waste at the Laboratory, the

  9. Independent Oversight Inspection, Los Alamos National Laboratory...

    Energy Savers [EERE]

    Inspection, Los Alamos National Laboratory - January 2007 Independent Oversight Inspection, Los Alamos National Laboratory - January 2007 January 2007 Independent Oversight...

  10. Los Alamos Dynamics Summer School

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    The Seventeenth Los Alamos Dynamics Summer School Program Information and Application Process Contact Institute Director Charles Farrar (505) 663-5330 Email Executive...

  11. Los Alamos ScienceFest

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    is participating by hosting a number of events, most of them featuring Lab scientists, engineers and technical staff. To view the full event schedule, visit the Los Alamos...

  12. Los Alamos ChamberFest

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos ChamberFest Los Alamos ChamberFest WHEN: Jun 13, 2015 10:00 AM - 3:00 PM WHERE: Central Park Square, Los Alamos CATEGORY: Community INTERNAL: Calendar Login Event Description ChamberFest is the annual Los Alamos Chamber of Commerce event featuring Chamber Members. It is an opportunity for businesses and nonprofits alike to showcase their products and services to the public. Entertainment will include music, a car show, pet activity area, and the always popular, kids activity area

  13. Lawrence Livermore and Los Alamos

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    Bechtel National, the University of California, BWX Technologies, URS and Battelle. The team also includes Texas A&M University. LANS operates Los Alamos National Laboratory, a...

  14. Los Alamos National Laboratory opens

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    brought a third waste repackaging facility online to increase its capability to process nuclear waste for permanent disposal. The "375 box line facility" enables Los Alamos to...

  15. Functional MnMg{sub k} cation complexes in GaN featured by Raman spectroscopy

    SciTech Connect (OSTI)

    Devillers, T. Bonanni, A.; Leite, D. M. G.; Department of Physics, So Paulo State University, BauruSP ; Dias da Silva, J. H.

    2013-11-18

    The evolution of the optical branch in the Raman spectra of (Ga,Mn)N:Mg epitaxial layers as a function of the Mn and Mg concentrations, reveals the interplay between the two dopants. We demonstrate that the various Mn-Mg-induced vibrational modes can be understood in the picture of functional MnMg{sub k} complexes formed when substitutional Mn cations are bound to k substitutional Mg through nitrogen atoms, the number of ligands k being driven by the ratio between the Mg and the Mn concentrations.

  16. Effect of Mn substitution on the transport properties of co-sputtered

    Office of Scientific and Technical Information (OSTI)

    Fe{sub 3-x}Mn{sub x}Si epilayers (Journal Article) | SciTech Connect Journal Article: Effect of Mn substitution on the transport properties of co-sputtered Fe{sub 3-x}Mn{sub x}Si epilayers Citation Details In-Document Search Title: Effect of Mn substitution on the transport properties of co-sputtered Fe{sub 3-x}Mn{sub x}Si epilayers Motivated by the theoretical calculations that Fe{sub 3-x}Mn{sub x}Si can simultaneously exhibit a high spin polarization with a high Curie temperature to be

  17. Mn-Fe base and Mn-Cr-Fe base austenitic alloys

    DOE Patents [OSTI]

    Brager, Howard R. (Richland, WA); Garner, Francis A. (Richland, WA)

    1987-01-01

    Manganese-iron base and manganese-chromium-iron base austenitic alloys designed to have resistance to neutron irradiation induced swelling and low activation have the following compositions (in weight percent): 20 to 40 Mn; up to about 15 Cr; about 0.4 to about 3.0 Si; an austenite stabilizing element selected from C and N, alone or in combination with each other, and in an amount effective to substantially stabilize the austenite phase, but less than about 0.7 C, and less than about 0.3 N; up to about 2.5 V; up to about 0.1 P; up to about 0.01 B; up to about 3.0 Al; up to about 0.5 Ni; up to about 2.0 W; up to about 1.0 Ti; up to about 1.0 Ta; and with the remainder of the alloy being essentially iron.

  18. Synthesis, characterization and electrochemical performance of Al-substituted Li₂MnO₃

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Dhital, Chetan; Huq, Ashfia; Paranthaman, Mariappan Parans; Manivannan, Ayyakkannu; Torres-Castro, Loraine; Shojan, Jifi; Julien, Christian M.; Katiyar, Ram S.

    2015-08-08

    Li2MnO3 is known to be electrochemically inactive due to Mn in tetravalent oxidation state. Several compositions such as Li2MnO3 , Li1.5Al0.17MnO3, Li1.0Al0.33MnO3 and Li0.5Al0.5MnO3 were synthesized by a sol–gel Pechini method. All the samples were characterized with x-ray diffraction, Raman, x-ray photoelectron spectroscopy, scanning electron microscopy, Tap density and BET analyzer. X-ray diffraction patterns indicated the presence of monoclinic phase for pristine Li2MnO3and mixed monoclinic/spinel phases (Li2 - xMn1 - yAlx + yO3 + z) for Al-substituted Li2MnO3compounds. The Al substitution seems to occur both at Li and Mn sites, which could explain the presence of spinel phase. X-ray photoelectronmore » spectroscopy for Mn 2p orbital reveals a significant decrease in binding energy for Li1.0Al0.33MnO3 and Li0.5Al0.5MnO3 compounds. Cyclic voltammetry, charge/discharge cycles and electrochemical impedance spectroscopy were also performed. A discharge capacity of 24 mAh g-1 for Li2MnO3, 68 mAh g-1 for Li1.5Al0.17MnO3, 58 mAh g-1 for Li1.0Al0.33MnO3 and 74 mAh g-1 for Li0.5Al0.5MnO3 were obtained. As a result, aluminum substitutions increased the formation of spinel phase which is responsible for cycling.« less

  19. Resonant spin tunneling in randomly oriented nanospheres of Mn?? acetate

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Lendinez, S.; Billinge, S. J. L.; Zarzuela, R.; Tejada, J.; Terban, M. W.; Espin, J.; Imaz, I.; Maspoch, D.; Chudnovsky, E. M.

    2015-01-06

    We report measurements and theoretical analysis of resonant spin tunneling in randomly oriented nanospheres of a molecular magnet. Amorphous nanospheres of Mn?? acetate have been fabricated and characterized by chemical, infrared, TEM, X-ray, and magnetic methods. Magnetic measurements have revealed sharp tunneling peaks in the field derivative of the magnetization that occur at the typical resonant field values for the Mn?? acetate crystal in the field parallel to the easy axis.Theoretical analysis is provided that explains these observations. We argue that resonant spin tunneling in a molecular magnet can be established in a powder sample, without the need for amoresingle crystal and without aligning the easy magnetization axes of the molecules. This is confirmed by re-analyzing the old data on a powdered sample of non-oriented micron-size crystals of Mn?? acetate. Our findings can greatly simplify the selection of candidates for quantum spin tunneling among newly synthesized molecular magnets.less

  20. Climate Action Champions: Minneapolis, MN | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Minneapolis, MN Climate Action Champions: Minneapolis, MN The City of Minneapolis, or the “City of Lakes”, lies on both banks of the Mississippi River in Minnesota. Once the flour milling capital of the world, the larger of the Twin Cities is now a thriving Midwestern economic hub. │ Photo courtesy of Meet Minneapolis. The City of Minneapolis, or the "City of Lakes", lies on both banks of the Mississippi River in Minnesota. Once the flour milling capital of the world,

  1. Pulsed laser deposition of Mn doped CdSe quantum dots for improved solar cell performance

    SciTech Connect (OSTI)

    Dai, Qilin; Wang, Wenyong E-mail: jtang2@uwyo.edu; Tang, Jinke E-mail: jtang2@uwyo.edu; Sabio, Erwin M.

    2014-05-05

    In this work, we demonstrate (1) a facile method to prepare Mn doped CdSe quantum dots (QDs) on Zn{sub 2}SnO{sub 4} photoanodes by pulsed laser deposition and (2) improved device performance of quantum dot sensitized solar cells of the Mn doped QDs (CdSe:Mn) compared to the undoped QDs (CdSe). The band diagram of photoanode Zn{sub 2}SnO{sub 4} and sensitizer CdSe:Mn QD is proposed based on the incident-photon-to-electron conversion efficiency (IPCE) data. Mn-modified band structure leads to absorption at longer wavelengths than the undoped CdSe QDs, which is due to the exchange splitting of the CdSe:Mn conduction band by the Mn dopant. Three-fold increase in the IPCE efficiency has also been observed for the Mn doped samples.

  2. Multiscale twin hierarchy in NiMnGa shape memory alloys with...

    Office of Scientific and Technical Information (OSTI)

    Multiscale twin hierarchy in NiMnGa shape memory alloys with Fe and Cu Citation Details In-Document Search Title: Multiscale twin hierarchy in NiMnGa shape memory alloys with Fe ...

  3. Phase stability of the SrMn O 3 hexagonal perovskite system at...

    Office of Scientific and Technical Information (OSTI)

    Phase stability of the SrMn O 3 hexagonal perovskite system at high pressure and temperature Title: Phase stability of the SrMn O 3 hexagonal perovskite system at highpressure and ...

  4. High spin polarization in CoFeMnGe equiatomic quaternary Heusler...

    Office of Scientific and Technical Information (OSTI)

    Title: High spin polarization in CoFeMnGe equiatomic quaternary Heusler alloy We report the structure, magnetic property, and spin polarization of CoFeMnGe equiatomic...

  5. Magnetocaloric effect of Pr2Fe17-x Mn x alloys (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Search Results Journal Article: Magnetocaloric effect of Pr2Fe17-x Mn x alloys Citation Details In-Document Search Title: Magnetocaloric effect of Pr2Fe17-x Mn x ...

  6. Los Alamos National Laboratory Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos National Laboratory 14 15 Technology Transfer 2011-2012 Progress Report Technology Transfer 2011-2012 Progress Report In 2011, The National Institutes of Health awarded a five-year Models of Infectious Disease Agent Study (MIDAS) grant to a team of researchers from Los Alamos National Laboratory (LANL) and Tulane University. This team, lead by principal investigator Sara Del Valle, connects social media and epidemiological research in an attempt to predict people's social behavior and

  7. LOS ALAMOS, New Mexico, June 13, 2012-Los Alamos National Laboratory...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Newest Los Alamos facility receives LEED Gold certification June 13, 2012 LOS ALAMOS, New Mexico, June 13, 2012-Los Alamos National Laboratory's newest facility, the Radiological...

  8. Women in Los Alamos History

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Women in Los Alamos History Women in Los Alamos History WHEN: Mar 03, 2016 5:30 PM - 8:00 PM WHERE: Los Alamos Golf Course Clubhouse SPEAKER: Jill Tietjen CONTACT: Sarah Terrill (505) 709-0089 CATEGORY: Community INTERNAL: Calendar Login Event Description Tietjen is a well-known speaker on the topic of gender issues in the work place, and a motivational speaker for young women working toward educations and careers in science, engineering, technology and math (STEM). The community is invited to

  9. Los Alamos National Laboratory ships

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ships last of high-activity drums to WIPP November 25, 2008 LOS ALAMOS, New Mexico, November 25, 2008- The last group of unvented high- activity drums left Los Alamos National Laboratory for the Waste Isolation Pilot Plant (WIPP) near Carlsbad earlier this month. "This is a significant achievement for the Laboratory," said Mark Shepard of Los Alamos's Waste Disposition Project. "It closes a chapter on the February 2007 commitment to the Defense Nuclear Facilities Safety Board to

  10. Mixing antiferromagnets to tune NiFe-[IrMn/FeMn] interfacial spin-glasses, grains thermal stability, and related exchange bias properties

    SciTech Connect (OSTI)

    Akmaldinov, K.; Ducruet, C.; Portemont, C.; Joumard, I.; Prejbeanu, I. L.; Dieny, B.; Baltz, V.

    2014-05-07

    Spintronics devices and in particular thermally assisted magnetic random access memories require a wide range of ferromagnetic/antiferromagnetic (F/AF) exchange bias (EB) properties and subsequently of AF materials to fulfil diverse functionality requirements for the reference and storage. For the reference layer, large EB energies and high blocking temperature (T{sub B}) are required. In contrast, for the storage layer, mostly moderate T{sub B} are needed. One of the present issues is to find a storage layer with properties intermediate between those of IrMn and FeMn and in particular: (i) with a T{sub B} larger than FeMn for better stability at rest-T but lower than IrMn to reduce power consumption at write-T and (ii) with improved magnetic interfacial quality, i.e., with reduced interfacial glassy character for lower properties dispersions. To address this issue, the EB properties of F/AF based stacks were studied for various mixed [IrMn/FeMn] AFs. In addition to EB loop shifts, the F/AF magnetic interfacial qualities and the AF grains thermal stability are probed via measurements of the low- and high-temperature contributions to the T{sub B} distributions, respectively. A tuning of the above three parameters is observed when evolving from IrMn to FeMn via [IrMn/FeMn] repetitions.

  11. Epitaxial growth of intermetallic MnPt films on oxides and large exchange bias

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Liu, Zhiqi; Biegalski, Michael D.; Hsu, Shang-Lin; Shang, Shunli; Marker, Cassie; Liu, Jian; Li, Li; Fan, Lisha S.; Meyer, Tricia L.; Wong, Anthony T.; et al

    2015-11-05

    High-quality epitaxial growth of intermetallic MnPt films on oxides is achieved, with potential for multiferroic heterostructure applications. Antisite-stabilized spin-flipping induces ferromagnetism in MnPt films, although it is robustly antiferromagnetic in bulk. Thus, highly ordered antiferromagnetic MnPt films exhibit superiorly large exchange coupling with a ferromagnetic layer.

  12. Los Angeles County- Commercial PACE

    Broader source: Energy.gov [DOE]

    Businesses in Los Angeles County may be eligible for the county's Property Assessed Clean Energy (PACE) program. PACE programs allow businesses to finance energy and water efficiency projects which...

  13. Los Alamos National Laboratory begins

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    - 2 - Energy's Los Alamos Field Office. "Data from this testing will be used to recommend a final remedy which we will then submit to the state."

  14. Los Alamos National Laboratory begins

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Energy's Los Alamos Field Office. "Data from this testing will be used to recommend a final remedy which we will then submit to the state." - 2 -

  15. Los Alamos National Security, LLC

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    each of the seven counties that the LANL Foundation serves: Los Alamos, Mora, Rio Arriba, San Miguel, Sandoval, Santa Fe, and Taos. Scholarships will be awarded to Northern New...

  16. Two Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    National Laboratory organizations receive Performance Excellence recognition from Quality New Mexico March 26, 2015 Laboratory is co-sponsor of QNM event in Albuquerque LOS ALAMOS, N.M., March 26, 2015-Los Alamos National Laboratory's Nuclear Material Control and Accountability Group and the Quality and Performance Assurance Division received 2014 Performance Excellence Recognition awards from Quality New Mexico and will be recognized at QNM's annual learning summit and awards ceremony April 7-8

  17. Creating Los Alamos Women's Group

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Raeanna Sharp-Geiger-Creating a cleaner, greener environment March 28, 2014 Creating Los Alamos Women's Group Inspired by their informal dinner discussions, Raeanna Sharp-Geiger and a few of her female colleagues decided to create a new resource a few years ago, the Los Alamos Women's Group. They wanted to create a comfortable environment where women from all across the diverse Lab could network, collaborate, share ideas and gain a broader perspective of the Lab's mission. The Women's Group has

  18. Los Alamos Employee Giving Campaign

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos Employee Giving Campaign Los Alamos Employee Giving Campaign Laboratory employees contribute to the annual Employee Giving Campaign to support a wide range of programs offered by eligible nonprofit organizations. Contact Giving Campaigns & Volunteering Debbi Wersonick Community Relations & Partnerships (505) 667-7870 Email I Give Because campaign logo Investing in nonprofits helps address critical needs The Employee Giving Campaign helps provide funding for area nonprofit

  19. Los Alamos honors Laboratory Fellows

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos honors Laboratory Fellows Los Alamos honors Laboratory Fellows Charles Farrar, Steven Elliott and Mikhail Shashkov are being honored with appointment as Laboratory Fellows for 2012. November 19, 2012 Steven Elliott, Mikhail Shashkov and Charles Farrar Steven Elliott, Mikhail Shashkov and Charles Farrar Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email Chuck, Steven, and Mikhail have made exceptional contributions in their fields and to national security Engineering,

  20. Los Alamos Employees' Scholarship Fund

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos Employees' Scholarship Fund Los Alamos Employees' Scholarship Fund The LAESF campaign raises funds for scholarships that support students from Northern New Mexico who are pursuing four-year undergraduate degrees in fields that will serve the region. June 13, 2012 Scholarship winner and Lab Director Scholarship winner Micaela Lucero and Lab Director Charlie McMillan Contacts Giving Campaigns & Volunteering Debbi Wersonick Community Relations & Partnerships (505) 667-7870 Email

  1. Los Alamos National Laboratory Safety

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    Safety Cinema website earns international recognition June 6, 2013 Supports DOE, Voluntary Protection Program best practices LOS ALAMOS, N.M., June 6, 2013-Los Alamos National Laboratory's safety video website, Safety Cinema(tm), won the 2013 Communicator Award from the International Academy of Visual Arts in the education category. The website also won the International Summit Creative Award in the training category. Safety Cinema(tm) is a series of videos, fliers, posters, presentation slides

  2. Los Alamos National Laboratory board

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    board renews plan for education, economic development, charitable giving September 18, 2013 $3.1 million approved for 2014 LOS ALAMOS, N.M., Sept. 18, 2013-The Los Alamos National Security, LLC Board of Governors last week approved a $3.1 million extension to the company's plan supporting education, economic development and charitable giving in Northern New Mexico. "We've tailored our programs very carefully to leverage dollars for the maximum benefit to the community," said Lab

  3. Los Alamos National Laboratory medical

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    medical plan to cover PMC services March 13, 2008 LOS ALAMOS, New Mexico, March 13, 2008-United Healthcare (UHC), the company that administers the physician and medical facility network supporting medical plans for Los Alamos National Laboratory employees, has agreed to retroactively treat Physicians Medical Center of Santa Fe (PMC) as an in-network facility beginning on April 25, 2007. This move allows all claims for services done at PMC from April 25, 2007, forward to be covered as in-network

  4. Los Alamos National Laboratory names

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    cleanup subcontractors August 14, 2009 Small businesses will perform up to $100 million in environmental work Los Alamos, New Mexico, August 14, 2009-Los Alamos National Laboratory today named three small businesses as subcontractors for up to $100 million in environmental cleanup work. The companies will carry out most of the demolition funded under the American Recovery and Reinvestment Act, as well as other work."We have a commitment to small businesses and to Northern New Mexico,"

  5. Los Alamos National Laboratory names

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    six scientists as 2009 Fellows November 5, 2009 Recognizes sustained, outstanding scientific contributions Los Alamos, New Mexico, November 5, 2009-Antoinette "Toni" Taylor, Stephen Becker, Joachim Birn, Lowell Brown, Patrick Colestock, and Samuel "Tom" Picraux have been designated 2009 Los Alamos National Laboratory Fellows in recognition of sustained, outstanding scientific contributions and exceptional promise for continued professional achievement. The title of Fellow is

  6. Los Alamos National Laboratory names

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    new leadership for Weapons and Operations Directorates June 19, 2015 LOS ALAMOS, N.M., June 19, 2015-Los Alamos National Laboratory Director Charlie McMillan announced today that after nationwide searches, Robert (Bob) Webster has been selected to be the Laboratory's next Principal Associate Director for Weapons Programs, and Craig Leasure has been selected as the new Principal Associate Director for Operations. Webster to lead Weapons Directorate As the Weapons Program leader, Webster will be

  7. Los Alamos National Laboratory to

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    to begin DARHT 2 operations January 29, 2008 Hydrodynamic testing at the frontier of science LOS ALAMOS, New Mexico, January 29, 2008- The Dual Axis Radiographic Hydrodynamic Test (DARHT) facility has officially become "dual" with authorization to begin full power operations of Axis 2, adding both new capability and higher energy to the unique accelerator facility. Los Alamos National Laboratory has received authorization from the National Nuclear Security Administration to begin

  8. Los Alamos National Laboratory top

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    top science news of 2012 December 20, 2012 Scientific advances that caught the world's interest LOS ALAMOS, NEW MEXICO, December 20, 2012-In 2012 Los Alamos National Laboratory made its scientific mark in a wide variety of areas, and the stories that caught the public's attention and that of the science community reflect those broad capabilities. Top science stories for the year traveled from the canyons of Mars to the high desert forests of New Mexico, from cosmic particles to the structure of

  9. Los Alamos honors Laboratory Fellows

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    Laboratory Fellows November 19, 2012 Engineering, physics and computer science leaders announced LOS ALAMOS, N.M., November 19, 2012-Three distinguished members of the Los Alamos National Laboratory scientific staff are being honored with appointment as Laboratory Fellows for 2012. The committee ranked a collection of nominations on the basis of: 1) Sustained, high-level achievements in programs of importance to the Laboratory;2) A fundamental or important discovery that has led to widespread

  10. Los Alamos names Laboratory Fellows

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Laboratory Fellows for 2015 January 27, 2016 Honorees span sciences in materials, weapons physics and complex systems LOS ALAMOS, N.M., Jan. 27, 2016-Four Los Alamos National Laboratory scientists have been selected as 2015 Laboratory Fellows. The honorees this year are Michael Bernardin, Avadh Saxena, Carlos Tome and Piotr Zelenay. "The Laboratory Fellows Organization recognizes researchers for innovative scientific and technical advances in their respective fields," said Laboratory

  11. Los Alamos, Sandia National labs

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Alamos, Sandia National labs recognize New Mexico small businesses for innovation April 3, 2013 LOS ALAMOS, N. M., April 3, 2013-Ten New Mexico small businesses participating in projects using the technical expertise and assistance of Los Alamos National Laboratory and Sandia National Laboratories will be recognized at the 12th annual Innovation Celebration Thursday, April 4, at Technology Venture Corporation's Deal Stream Summit being held at the Tamaya Resort in Bernalillo, NM. The New Mexico

  12. Cationic disorder and Mn{sup 3+}/Mn{sup 4+} charge ordering in the B? and B? sites of Ca{sub 3}Mn{sub 2}NbO{sub 9} perovskite: a comparison with Ca{sub 3}Mn{sub 2}WO{sub 9}

    SciTech Connect (OSTI)

    Lpez, C.A.; Saleta, M.E.; Pedregosa, J.C.; Snchez, R.D.; Alonso, J.A.; and others

    2014-02-15

    We describe the preparation, crystal structure determination, magnetic and transport properties of two novel Mn-containing perovskites, with a different electronic configuration for Mn atoms located in B site. Ca{sub 3}Mn{sup 3+}{sub 2}WO{sub 9} and Ca{sub 3}Mn{sup 3+/4+}{sub 2}NbO{sub 9} were synthesized by standard ceramic procedures; the crystallographic structure was studied from X-ray powder diffraction (XRPD) and neutron powder diffraction (NPD). Both phases exhibit a monoclinic symmetry (S.G.: P2{sub 1}/n); Ca{sub 3}Mn{sub 2}WO{sub 9} presents a long-range ordering over the B sites, whereas Ca{sub 3}Mn{sub 2}NbO{sub 9} is strongly disordered. By in-situ NPD, the temperature evolution of the structure study presents an interesting evolution in the octahedral size (?MnO?) for Ca{sub 3}Mn{sub 2}NbO{sub 9}, driven by a charge ordering effect between Mn{sup 3+} and Mn{sup 4+} atoms, related to the anomaly observed in the transport measurements at T?160 K. Both materials present a magnetic order below T{sub C}=30 K and 40 K for W and Nb materials, respectively. The magneto-transport measurements display non-negligible magnetoresistance properties in the paramagnetic regime. - Graphical abstract: Comparison between the octahedron size and the magnetic behaviour for Ca{sub 3}Mn{sub 2}NbO{sub 9} in the temperature region where the charge and magnetic order occur. Display Omitted - Highlights: Two novel Mn-containing double perovskites were obtained by solid-state reactions. Both double perovskites are monoclinic (P2{sub 1}/n) determined by XRPD and NPD. Ca{sub 3}Mn{sub 2}WO{sub 9} contains Mn{sup 3+} while Ca{sub 3}Mn{sub 2}NbO{sub 9} includes mixed-valence cations Mn{sup 3+}/Mn{sup 4+}. Ca{sub 3}Mn{sub 2}NbO{sub 9} presents a charge-ordering effect between Mn{sup 3+} and Mn{sup 4+} evidenced by NPD. The magnetic and transport studies evidenced the charge ordering in Ca{sub 3}Mn{sub 2}NbO{sub 9}.

  13. Clarification of enhanced ferromagnetism in Be-codoped InMnP fabricated using Mn/InP:Be bilayers grown by molecular beam epitaxy

    SciTech Connect (OSTI)

    Shon, Yoon; Lee, Sejoon; Taek Yoon, Im; Jeon, H. C.; Lee, D. J.; Kang, T. W.; Song, J. D.; Yoon, Chong S.; Kim, D. Y.; Park, C. S.

    2011-11-07

    The p-type InMnP:Be epilayers were prepared by the sequential growth of Mn/InP:Be bilayers using molecular-beam-epitaxy and the subsequent in-situ annealing at 200-300 deg. C. In triple-axis x-ray diffraction patterns, the samples revealed a shoulder peak indicative of intrinsic InMnP. The ferromagnetic transition in InMnP:Be was observed to occur at the elevated temperature of {approx}140 K, and the ferromagnetic spin-domains clearly appeared in magnetic force microscopy images. The improved ferromagnetic properties are attributed to the increased p-d hybridation due to high p-type conductivity of InMnP:Be (p {approx} 10{sup 20 }cm{sup -3}). The results suggest that enhanced ferromagnetism can be effectively obtained from Be-codoped InMnP.

  14. Transitioning Los Alamos technology into the marketplace

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    All Issues submit Transitioning Los Alamos technology into the marketplace A personal message from Duncan McBranch, Chief Technology Officer, Los Alamos National...

  15. Manhattan Project Sites at Los Alamos

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    about the role Los Alamos played during the Cold War. Los Alamos Historical Society Arts and Crafts Building 4. ARTS & CRAFTS BUILDING Originally classrooms for the Ranch...

  16. Independent Oversight Review, Los Alamos National Laboratory...

    Broader source: Energy.gov (indexed) [DOE]

    Emergency Response Organization at the Los Alamos National Laboratory This report provides the results of an independent review of the Los Alamos National Laboratory emergency...

  17. National Security Science | Los National Alamos Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    this Issue (pdf) In 2012 NSS received an NNSA Defense Programs AWARD OF EXCELLENCE National Security Science Mail Stop A142 Los Alamos National Laboratory Los Alamos, NM...

  18. Independent Oversight Review, Los Alamos National Laboratory...

    Energy Savers [EERE]

    September 2011 Independent Oversight Review, Los Alamos National Laboratory - September 2011 September 2011 Review of the Facility Centered Assessment of the Los Alamos National...

  19. Independent Oversight Review, Los Alamos National Laboratory...

    Energy Savers [EERE]

    April 2012 Independent Oversight Review, Los Alamos National Laboratory - April 2012 April 2012 Review of the Consequence Assessment Program at the Los Alamos National Laboratory...

  20. Los Angeles Mayors Office | Open Energy Information

    Open Energy Info (EERE)

    Mayors Office Jump to: navigation, search Name: Los Angeles Mayors Office Place: Los Angeles, California Zip: 90012-3239 Product: String representation "The Clean Tech ... LEED...

  1. SUMMARY Los Alamos National Laboratory Collaboration for

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    detection capabilities. Los Alamos National Laboratory (Los Alamos) has been a driving force in explosives science since its inception in 1943. The efforts to build the first...

  2. Los Angeles County Metropolitan Transportation Authority Metro...

    Open Energy Info (EERE)

    County Metropolitan Transportation Authority Metro Jump to: navigation, search Name: Los Angeles County Metropolitan Transportation Authority (Metro) Place: Los Angeles, California...

  3. Role of t{sub 2g} electrons in Mn-Tb coupling of multiferroic TbMnO{sub 3}

    SciTech Connect (OSTI)

    Guo, Y. Y.; Wang, Y. L.; Liu, J.-M.; Wei, T.

    2014-08-14

    We investigate the effect of Cr-doping in polycrystalline TbMn{sub 1?x}Cr{sub x}O{sub 3} (x???6%) ceramics on the magnetism, ferroelectricity, and dielectricity. The Cr substitution gradually suppresses the ferroelectricity induced by the Mn spiral spin ordering, and results in a stronger modulation of polarization by magnetic field with increasing x. However, the transition temperature T{sub Tb} corresponding to onset of Tb magnetic ordering has barely shifted with Cr doping. In other words, although the Cr-doping obviously disrupts the Mn spiral spin ordering, the exchange field J{sub Mn-Tb} acting on the Tb moments from the Mn-spin structure is hardly impacted. Our work demonstrates that the e{sub g} electron of Mn{sup 3+} plays an important role in forming the Mn spiral spin order, but the f-d exchange interaction between the Mn 3d spins and the Tb 4f moments in multiferroic TbMnO{sub 3} almost involves only the t{sub 2g} electrons.

  4. Effect of Mn substitution on the transport properties of co-sputtered Fe{sub 3−x}Mn{sub x}Si epilayers

    SciTech Connect (OSTI)

    Tang, M.; Jin, C.; Bai, H. L.

    2014-11-07

    Motivated by the theoretical calculations that Fe{sub 3−x}Mn{sub x}Si can simultaneously exhibit a high spin polarization with a high Curie temperature to be applied in spintronic devices, and in order to further study the effect of Mn contents on the physical properties of Fe{sub 3−x}Mn{sub x}Si, we have investigated the effect of Mn substitution on the transport properties of epitaxial Fe{sub 3−x}Mn{sub x}Si (0≤x≤1) films systematically. The Fe{sub 3−x}Mn{sub x}Si films were epitaxially grown on MgO(001) plane with 45° rotation. The magnetization for various x shows enhanced irreversibility, implying the antiferromagnetic ordering induced by the substitution of Mn. A metal-semiconductor crossover was observed due to the enhanced disorders of interactions and the local lowering of symmetry induced by the substitution of Mn. The single-domain state in the Fe{sub 3−x}Mn{sub x}Si films leads to twofold symmetric curves of the anisotropic magnetoresistance and planar Hall resistivity.

  5. Plutonium Oxidation and Subsequent Reduction by Mn (IV) Minerals

    SciTech Connect (OSTI)

    KAPLAN, DANIEL

    2005-09-13

    Plutonium sorbed to rock tuff was preferentially associated with manganese oxides. On tuff and synthetic pyrolusite (Mn{sup IV}O{sub 2}), Pu(IV) or Pu(V) was initially oxidized, but over time Pu(IV) became the predominant oxidation state of sorbed Pu. Reduction of Pu(V/VI), even on non-oxidizing surfaces, is proposed to result from a lower Gibbs free energy of the hydrolyzed Pu(IV) surface species versus that of the Pu(V) or Pu(VI) surface species. This work suggests that despite initial oxidation of sorbed Pu by oxidizing surfaces to more soluble forms, the less mobile form of Pu, Pu(IV), will dominate Pu solid phase speciation during long term geologic storage. The safe design of a radioactive waste or spent nuclear fuel geologic repository requires a risk assessment of radionuclides that may potentially be released into the surrounding environment. Geochemical knowledge of the radionuclide and the surrounding environment is required for predicting subsurface fate and transport. Although difficult even in simple systems, this task grows increasingly complicated for constituents, like Pu, that exhibit complex environmental chemistries. The environmental behavior of Pu can be influenced by complexation, precipitation, adsorption, colloid formation, and oxidation/reduction (redox) reactions (1-3). To predict the environmental mobility of Pu, the most important of these factors is Pu oxidation state. This is because Pu(IV) is generally 2 to 3 orders of magnitude less mobile than Pu(V) in most environments (4). Further complicating matters, Pu commonly exists simultaneously in several oxidation states (5, 6). Choppin (7) reported Pu may exist as Pu(IV), Pu(V), or Pu(VI) oxic natural groundwaters. It is generally accepted that plutonium associated with suspended particulate matter is predominantly Pu(IV) (8-10), whereas Pu in the aqueous phase is predominantly Pu(V) (2, 11-13). The influence of the character of Mn-containing minerals expected to be found in subsurface repository environments on Pu oxidation state distributions has been the subject of much recent research. Kenney-Kennicutt and Morse (14), Duff et al. (15), and Morgenstern and Choppin (16) observed oxidation of Pu facilitated by Mn(IV)-bearing minerals. Conversely, Shaughnessy et al. (17) used X-ray Absorption near-edge spectroscopy (XANES) to show reduction of Pu(VI) by hausmannite (Mn{sup II}Mn{sub 2}{sup III}O{sub 4}) and manganite ({gamma}-Mn{sup III}OOH) and Kersting et al., (18) observed reduction of Pu(VI) by pyrolusite (Mn{sup IV}O{sub 2}). In this paper, we attempt to reconcile the apparently conflicting datasets by showing that Mn-bearing minerals can indeed oxidize Pu, however, if the oxidized species remains on the solid phase, the oxidation step competes with the formation of Pu(IV) that becomes the predominant solid phase Pu species with time. The experimental approach we took was to conduct longer term (approximately two years later) oxidation state analyses on the Pu sorbed to Yucca Mountain tuff (initial analysis reported by Duff et al., (15)) and measure the time-dependant changes in the oxidation state distribution of Pu in the presence of the Mn mineral pyrolusite.

  6. Voluntary Protection Program Onsite Review, Los Alamos National...

    Office of Environmental Management (EM)

    Security, Llc Los Alamos National Laboratory, Los Alamos, New Mexico - April 2014 Voluntary Protection Program Onsite Review, Los Alamos National Security, Llc Los Alamos National...

  7. Los Alamos National Laboratory marks

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    marks 20 years without full-scale nuclear testing September 26, 2012 LOS ALAMOS, New Mexico, Sept. 26, 2012-Two decades ago the last full-scale underground test of a nuclear weapon was conducted by Los Alamos National Laboratory at the Nevada Test Site. The test, code named "Divider," was detonated on Sept. 23, 1992 as the last of an eight-test series called "Julin." The test had an announced yield less than the equivalent of 20,000 tons of TNT. The purpose of the test, also

  8. Los Alamos National Laboratory, Sandia

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Sandia Labs, other major employers commit to STEM education in New Mexico November 20, 2014 Partnership aims to spark math, science inspiration in New Mexico students LOS ALAMOS, N.M., Nov. 20, 2014-Following up on a joint CEO proclamation on STEM education, Los Alamos National Laboratory, Sandia National Laboratories and several partners are hosting a discussion on "STEM Education in New Mexico" at 10 a.m. Saturday, Nov. 22 at Highland High School in Albuquerque. Laboratory Director

  9. Magnetostructural phase transformations in Tb 1-x Mn 2

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Zou, Junding; Paudyal, Durga; Liu, Jing; Mudryk, Yaroslav; Pecharsky, Vitalij K.; Gschneidner, Karl A.

    2015-01-16

    Magnetism and phase transformations in non-stoichiometric Tb1-xMn2 (x = 0.056, 0.039) have been studied as functions of temperature and magnetic field using magnetization, heat capacity, and X-ray powder diffraction measurements. Lowering the temperature, the compounds sequentially order ferrimagnetically and antiferromagnetically, and finally, exhibit spin reorientation transitions. Moreover, these structural distortions from room temperature cubic to low temperature rhombohedral structures occur at TN, and are accompanied by large volume changes reaching ~-1.27% and -1.42%, respectively. First principles electronic structure calculations confirm the phase transformation from the ferrimagnetic cubic structure to the antiferromagnetic rhombohedral structure in TbMn2.

  10. On the state of Mn impurity implanted in Si

    SciTech Connect (OSTI)

    Orlov, A. F.; Bublik, V. T.; Vdovin, V. I.; Agafonov, Yu. A.; Balagurov, L. A.; Zinenko, V. I.; Kulemanov, I. V.; Shcherbachev, K. D.

    2009-07-15

    The state of manganese impurity in implanted silicon at implantation doses of up to 5 x 10{sup 16} cm{sup -2} has been investigated by X-ray diffraction and transmission electron microscopy. It is established that, after short-term vacuum annealing at 850{sup o}C, most of the implanted manganese impurities are in microinclusions up to 20 nm in size formed by a tetragonal silicide phase of the Mn{sub 15}Si{sub 26} type.

  11. Los Alamos exceeds waste shipping goal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos exceeds waste shipping goal Los Alamos exceeds waste shipping goal Los Alamos shipped 1,074 cubic meters of transuranic (TRU) and mixed low-level waste to the Waste Isolation Pilot Plant and other approved waste disposal facilities. July 8, 2013 A shipment carrying Los Alamos transuranic waste heads down NM 502, bound for the Waste Isolation Pilot Plant in southeastern New Mexico. A shipment carrying Los Alamos transuranic waste heads down NM 502, bound for the Waste Isolation Pilot

  12. Los Alamos Dynamics Summer School Projects

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos Dynamics Summer School » Los Alamos Dynamics Summer School-Overview Los Alamos Dynamics Summer School Projects Los Alamos Dynamics Summer School Projects and Resources Contact Institute Director Charles Farrar (505) 665-0860 Email Executive Administrator Ellie Vigil (505) 667-2818 Email Administrative Assistant Rebecca Duran (505) 665-8899 Email Past Programs and Resources 2015 2014 STUDENT RESOURCES Precollege Undergrads Graduates Postdocs Housing Los Alamos National Laboratory Logo

  13. Los Alamos STEM Challenge registration now open

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos STEM Challenge registration now open Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue:Mar. 2016 all issues All Issues » submit Los Alamos STEM Challenge registration now open Recognition awaits students who can creatively present the future December 1, 2013 Los Alamos STEM Challenge The Los Alamos STEM Challenge runs from mid December through February 7. Contacts Community Programs Office Director Kurt Steinhaus Email Editor

  14. Los Alamos exceeds waste shipping goal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos exceeds waste shipping goal Los Alamos exceeds waste shipping goal Los Alamos shipped 1,074 cubic meters of transuranic (TRU) and mixed low-level waste to the Waste Isolation Pilot Plant and other approved waste disposal facilities. July 8, 2013 A shipment carrying Los Alamos transuranic waste heads down NM 502, bound for the Waste Isolation Pilot Plant in southeastern New Mexico. A shipment carrying Los Alamos transuranic waste heads down NM 502, bound for the Waste Isolation Pilot

  15. Los Angeles County, California | Department of Energy

    Energy Savers [EERE]

    County, California Los Angeles County, California Los Angeles County, California In order to make opportunities for home energy upgrades clear and consistent for the 10 million people living in Los Angeles County, the Los Angeles County Office of Sustainability decided to promote a single, regional residential efficiency program. The State of California had previously developed the statewide Energy Upgrade California program, which Los Angeles and other counties agreed to support through grant

  16. Los Alamos National Laboratory | Department of Energy

    Office of Environmental Management (EM)

    Los Alamos National Laboratory Los Alamos National Laboratory Los Alamos National Laboratory | September 2006 Aerial View Los Alamos National Laboratory | September 2006 Aerial View Los Alamos National Laboratory's (LANL) primary mission is to provide scientific and engineering support to national security programs. LANL performs R&D, design, maintenance, and testing in support of the nuclear weapons stockpile. LANL also performs theoretical and applied R&D in such areas as materials

  17. Ferromagnetic interactions and martensitic transformation in Fe doped Ni-Mn-In shape memory alloys

    SciTech Connect (OSTI)

    Lobo, D. N.; Priolkar, K. R.; Emura, S.; Nigam, A. K.

    2014-11-14

    The structure, magnetic, and martensitic properties of Fe doped Ni-Mn-In magnetic shape memory alloys have been studied by differential scanning calorimetry, magnetization, resistivity, X-ray diffraction (XRD), and EXAFS. While Ni{sub 2}MnIn{sub 1?x}Fe{sub x} (0???x???0.6) alloys are ferromagnetic and non martensitic, the martensitic transformation temperature in Ni{sub 2}Mn{sub 1.5}In{sub 1?y}Fe{sub y} and Ni{sub 2}Mn{sub 1.6}In{sub 1?y}Fe{sub y} increases for lower Fe concentrations (y???0.05) before decreasing sharply for higher Fe concentrations. XRD analysis reveals presence of cubic and tetragonal structural phases in Ni{sub 2}MnIn{sub 1?x}Fe{sub x} at room temperature with tetragonal phase content increasing with Fe doping. Even though the local structure around Mn and Ni in these Fe doped alloys is similar to martensitic Mn rich Ni-Mn-In alloys, presence of ferromagnetic interactions and structural disorder induced by Fe affect Mn-Ni-Mn antiferromagnetic interactions resulting in suppression of martensitic transformation in these Fe doped alloys.

  18. Manganese valence and coordination structure in Mn,Mg-codoped {gamma}-AlON green phosphor

    SciTech Connect (OSTI)

    Takeda, Takashi; Xie, Rong-Jun; Hirosaki, Naoto; Matsushita, Yoshitaka; Honma, Tetuso

    2012-10-15

    The valence and coordination structure of manganese in a Mn,Mg-codoped {gamma}-AlON spinel-type oxynitride green phosphor were studied by synchrotron X-ray diffraction and absorption fine structure measurements. The absorption edge position of the XANES revealed the bivalency of Mn. Two cation sites are available in the spinel structure for cation doping: a tetrahedral site and an octahedral site. The pre-edge of the XANES and the distance to the nearest neighbor atoms obtained from the EXAFS measurement showed that Mn was situated at the tetrahedral site. Rietveld analysis showed that the vacancy occupied the octahedral site. The preferential occupation of the tetrahedral site by Mn and the roles of N and Mg are discussed in relation to the spinel crystal structure. - Graphical Abstract: Fourier transform of EXAFS of Mn K-edge for Mn,Mg-codoped green phosphor and Mn coordination structure. Highlights: Black-Right-Pointing-Pointer Mn, Mg-codoped {gamma}-AlON green phosphor for white LED. Black-Right-Pointing-Pointer The valence of Mn is divalent. Black-Right-Pointing-Pointer Mn occupies the tetrahedral site in the spinel structure.

  19. Effect of composition and heat treatment on MnBi magnetic materials

    SciTech Connect (OSTI)

    Cui, Jun [Pacific Northwest National Laboratory; Choi, Jung-Pyung [Pacific Northwest National Laboratory; Polikarpov, Evgueni [Pacific Northwest National Laboratory; Bowden, Mark E [Pacific Northwest National Laboratory; Xie, Wei [Pacific Northwest National Laboratory; Li, Guosheng [Pacific Northwest National Laboratory; Nie, Zimin [Pacific Northwest National Laboratory; Zarkevich, Nikolai [Ames Laboratory; Kramer, Matthew J [Ames Laboratory; Johnson, Duane [Ames Laboratory

    2014-10-01

    The metallic compound MnBi is a promising rare-earth-free permanent magnet material, unique among all candidates for its high intrinsic coercivity (Hci) and its large positive temperature coefficient. The Hci of MnBi in thin-film or powder form can exceed 12 and 26 kOe at 300 and 523 K, respectively. Such a steep rise in Hci with increasing temperature is unique to MnBi. Consequently, MnBi is a highly sought-after hard phase for exchange coupling nanocomposite magnets. However, the reaction between Mn and Bi is peritectic, and hence Mn tends to precipitate out of the MnBi liquid during the solidification process. As result, when the alloy is prepared using conventional induction or arc-melting casting methods, additional Mn is required to compensate the precipitation of Mn. In addition to composition, post-casting annealing plays an important role in obtaining a high content of MnBi low-temperature phase (LTP) because the annealing encourages the Mn precipitates and the unreacted Bi to react, forming the desired LTP phase. Here we report a systematic study of the effect of composition and heat treatments on the phase content and magnetic properties of MnBi alloys. In this study, 14 compositions were prepared using conventional metallurgical methods, and the compositions, crystal structures, phase content and magnetic properties of the resulting alloys were analyzed. The results show that the composition with 55 at.% Mn exhibits both the highest LTP content (93 wt.%) and magnetization (74 emu g?1 with 9 T applied field at 300 K).

  20. Large exchange bias enhancement in (Pt(or Pd)/Co)/IrMn/Co trilayers with ultrathin IrMn thanks to interfacial Cu dusting

    SciTech Connect (OSTI)

    Vinai, G. [SPINTEC, UMR 8191 CEA/CNRS/UJF/Grenoble-INP, CEA/INAC, 17, rue des Martyrs, 38054 Grenoble (France); Crocus Technology, 4 Place Robert Schuman, 38054 Grenoble (France); Moritz, J. [Institut Jean Lamour, UMR 7198 CNRS - Universit de Lorraine, Bd des Aiguillettes, BP 70239, F-54506 Vandoeuvre-les-Nancy Cedex (France); Bandiera, S. [Crocus Technology, 4 Place Robert Schuman, 38054 Grenoble (France); Prejbeanu, I. L.; Dieny, B. [SPINTEC, UMR 8191 CEA/CNRS/UJF/Grenoble-INP, CEA/INAC, 17, rue des Martyrs, 38054 Grenoble (France)

    2014-04-21

    The magnitude of exchange bias (H{sub ex}) at room temperature can be significantly enhanced in IrMn/Co and (Pt(or Pd)/Co)/IrMn/Co structures thanks to the insertion of an ultrathin Cu dusting layer at the IrMn/Co interface. The combination of trilayer structure and interfacial Cu dusting leads to a three-fold increase in H{sub ex} as compared to the conventional IrMn/Co bilayer structure, with an increased blocking temperature (T{sub B}) and a concave curvature of the temperature dependence H{sub ex}(T), ideal for improved Thermally Assisted-Magnetic Random Access Memory storage layer. This exchange bias enhancement is ascribed to a reduction of the spin frustration at the IrMn/Co interface thanks to interfacial Cu addition.

  1. Unoccupied electronic structure of Ni2MnGa ferromagnetic shape memory alloy

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Unoccupied electronic structure of Ni2MnGa ferromagnetic shape memory alloy Citation Details In-Document Search This content will become publicly available on August 20, 2016 Title: Unoccupied electronic structure of Ni2MnGa ferromagnetic shape memory alloy Momentum resolved inverse photoemission spectroscopy measurements show that the dispersion of the unoccupied bands of Ni2MnGa is significant in the austenite phase. Furthermore, in the martensite phase,

  2. Structural and ferromagnetic properties of an orthorhombic phase of MnBi stabilized with Rh additions

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Taufour, Valentin; Thimmaiah, Srinivasa; March, Stephen; Saunders, Scott; Sun, Kewei; Lamichhane, Tej Nath; Kramer, Matthew J.; Bud’ko, Sergey L.; Canfield, Paul C.

    2015-07-28

    The article addresses the possibility of alloy elements in MnBi which may modify the thermodynamic stability of the NiAs-type structure without significantly degrading the magnetic properties. The addition of small amounts of Rh and Mn provides an improvement in the thermal stability with some degradation of the magnetic properties. The small amounts of Rh and Mn additions in MnBi stabilize an orthorhombic phase whose structural and magnetic properties are closely related to the ones of the previously reported high-temperature phase of MnBi (HT MnBi). The properties of the HT MnBi, which is stable between 613 and 719 K, have notmore » been studied in detail because of its transformation to the stable low-temperature MnBi (LT MnBi), making measurements near and below its Curie temperature difficult. The Rh-stabilized MnBi with chemical formula Mn1.0625–xRhxBi [x=0.02(1)] adopts a new superstructure of the NiAs/Ni2In structure family. It is ferromagnetic below a Curie temperature of 416 K. The critical exponents of the ferromagnetic transition are not of the mean-field type but are closer to those associated with the Ising model in three dimensions. The magnetic anisotropy is uniaxial; the anisotropy energy is rather large, and it does not increase when raising the temperature, contrary to what happens in LT MnBi. The saturation magnetization is approximately 3μB/f.u. at low temperatures. Thus, while this exact composition may not be application ready, it does show that alloying is a viable route to modifying the stability of this class of rare-earth-free magnet alloys.« less

  3. Cr(OH)?(s) Oxidation Induced by Surface Catalyzed Mn(II) Oxidation

    SciTech Connect (OSTI)

    Namgung, Seonyi; Kwon, M.; Qafoku, Nikolla; Lee, Gie Hyeon

    2014-09-16

    This study examined the feasibility of Cr(OH)?(s) oxidation mediated by surface catalyzed Mn(II) oxidation under common groundwater pH conditions as a potential pathway of natural Cr(VI) contaminations. Dissolved Mn(II) (50 ?M) was reacted with or without synthesized Cr(OH)?(s) (1.0 g/L) at pH 7 9 under oxic or anoxic conditions. In the absence of Cr(OH)?(s), homogeneous Mn(II) oxidation by dissolved O? was not observed at pH ? 8.0 for 50 d. At pH 9.0, by contrast, dissolved Mn(II) was completely removed within 8 d and precipitated as hausmannite. When Cr(OH)?(s) was present, this solid was oxidized and released substantial amounts of Cr(VI) as dissolved Mn(II) was added into the suspension at pH ? 8.0 under oxic conditions. Our results suggest that Cr(OH)?(s) was readily oxidized by a newly formed Mn oxide as a result of Mn(II) oxidation catalyzed on Cr(OH)?(s) surface. XANES analysis of the residual solids after the reaction between 1.0 g/L Cr(OH)?(s) and 204 ?M Mn(II) at pH 9.0 for 22 d revealed that the product of surface catalyzed Mn(II) oxidation resembled birnessite. The rate and extent of Cr(OH)?(s) oxidation was likely controlled by those of surface catalyzed Mn(II) oxidation as the production of Cr(VI) increased with increasing pH and initial Mn(II) concentrations. This study evokes the potential environmental hazard of sparingly soluble Cr(OH)?(s) that can be a source of Cr(VI) in the presence of dissolved Mn(II).

  4. Enhanced magnetic hysteresis in Ni-Mn-Ga single crystal and its influence

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    on magnetic shape memory effect (Journal Article) | SciTech Connect Enhanced magnetic hysteresis in Ni-Mn-Ga single crystal and its influence on magnetic shape memory effect Citation Details In-Document Search Title: Enhanced magnetic hysteresis in Ni-Mn-Ga single crystal and its influence on magnetic shape memory effect Enhanced magnetic hysteresis due to boron doping in combination with magnetic shape memory effect in Ni-Mn-Ga single crystal results in new interesting functionality of

  5. Electronic Structure and Oxidation State Changes in the Mn (4) Ca Cluster of Photosystem II

    SciTech Connect (OSTI)

    Yano, J.; Pushkar, Y.; Messinger, J.; Bergmann, U.; Glatzel, P.; Yachandra, V.K.; /SLAC

    2012-08-17

    Oxygen-evolving complex (Mn{sub 4}Ca cluster) of Photosystem II cycles through five intermediate states (S{sub i}-states, i = 0-4) before a molecule of dioxygen is released. During the S-state transitions, electrons are extracted from the OEC, either from Mn or alternatively from a Mn ligand. The oxidation state of Mn is widely accepted as Mn{sub 4}(III{sub 2},IV{sub 2}) and Mn{sub 4}(III,IV{sub 3}) for S{sub 1} and S{sub 2} states, while it is still controversial for the S{sub 0} and S{sub 3} states. We used resonant inelastic X-ray scattering (RIXS) to study the electronic structure of Mn{sub 4}Ca complex in the OEC. The RIXS data yield two-dimensional plots that provide a significant advantage by obtaining both K-edge pre-edge and L-edge-like spectra (metal spin state) simultaneously. We have collected data from PSII samples in the each of the S-states and compared them with data from various inorganic Mn complexes. The spectral changes in the Mn 1s2p{sub 3/2} RIXS spectra between the S-states were compared to those of the oxides of Mn and coordination complexes. The results indicate strong covalency for the electronic configuration in the OEC, and we conclude that the electron is transferred from a strongly delocalized orbital, compared to those in Mn oxides or coordination complexes. The magnitude for the S{sub 0} to S{sub 1}, and S{sub 1} to S{sub 2} transitions is twice as large as that during the S{sub 2} to S{sub 3} transition, indicating that the electron for this transition is extracted from a highly delocalized orbital with little change in charge density at the Mn atoms.

  6. Los Alamos Critical Assemblies Facility

    SciTech Connect (OSTI)

    Malenfant, R.E.

    1981-06-01

    The Critical Assemblies Facility of the Los Alamos National Laboratory has been in existence for thirty-five years. In that period, many thousands of measurements have been made on assemblies of /sup 235/U, /sup 233/U, and /sup 239/Pu in various configurations, including the nitrate, sulfate, fluoride, carbide, and oxide chemical compositions and the solid, liquid, and gaseous states. The present complex of eleven operating machines is described, and typical applications are presented.

  7. Los Alamos National Laboratory Institutes

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos National Laboratory Institutes The National Security Education Center has formed several institutes, each with a partner university or consortia of universities. The formation of these institutes serves the need for LANL to recruit new staff and provide educational opportunities that will enhance retention at the Laboratory. This is accomplished by:  Developing long-term collaborative relationships with universities whose research interests are important to the Laboratory. 

  8. Los Alamos National Laboratory The

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos National Laboratory The journey from Trinity to Trinity begins with the New Mexico desert night sky turning instantly to day at 05:29 am on July 16, 1945. An eyewitness recalled, "The effects could well be called unprecedented, magnificent, beautiful, stupendous, and terrifying. The lighting effects beggared description. The whole country was lighted by a searing light with the intensity many times that of the midday sun. It was golden, purple, violet, gray, and blue." It

  9. Los Alamos Neutron Science Center

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos Neutron Science Center lansce.lanl.gov lansce-user-office@lanl.gov mesaheader Beam Status Accelerator Ops (Internal) Operating Schedule Long Range Operating Schedule User Resources User Agreements Proposals Visit Registration Schedules Experiment Reports User Satisfaction Survey Reviews Users User Office User Program LANSCE User Group Rosen Scholar Rosen Prize News & Multimedia News Multimedia Events Profiles Highlights Seminars Activity Reports The Pulse User Program Headlines

  10. Change LOS ALAMOS, N.M., May 19, 2015-Researchers at Los Alamos...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    tree mortality accelerating in forests May 19, 2015 Los Alamos' paper published in Nature Climate Change LOS ALAMOS, N.M., May 19, 2015-Researchers at Los Alamos National...

  11. Enhanced magnetic hysteresis in Ni-Mn-Ga single crystal and its...

    Office of Scientific and Technical Information (OSTI)

    shape memory effect Citation Details In-Document Search Title: Enhanced magnetic hysteresis in Ni-Mn-Ga single crystal and its influence on magnetic shape memory effect ...

  12. CaMn2Sb2: Spin waves on a frustrated antiferromagnetic honeycomb lattice

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect CaMn2Sb2: Spin waves on a frustrated antiferromagnetic honeycomb lattice Citation Details In-Document Search This content will become publicly available on May 22, 2016 Title: CaMn2Sb2: Spin waves on a frustrated antiferromagnetic honeycomb lattice We present inelastic neutron scattering measurements of the antiferromagnetic insulator CaMn2Sb2:, which consists of corrugated honeycomb layers of Mn. The dispersion of magnetic excitations has been measured

  13. Preparation and electrochemical properties of lamellar MnO{sub 2} for supercapacitors

    SciTech Connect (OSTI)

    Yan, Jun; Wei, Tong; Cheng, Jie; Fan, Zhuangjun; Zhang, Milin

    2010-02-15

    Lamellar birnessite-type MnO{sub 2} materials were prepared by changing the pH of the initial reaction system via hydrothermal synthesis. The interlayer spacing of MnO{sub 2} with a layered structure increased gradually when the initial pH value varied from 12.43 to 2.81, while the MnO{sub 2}, composed of {alpha}-MnO{sub 2} and {gamma}-MnO{sub 2}, had a rod-like structure at pH 0.63. Electrochemical studies indicated that the specific capacitance of birnessite-type MnO{sub 2} was much higher than that of rod-like MnO{sub 2} at high discharge current densities due to the lamellar structure with fast intercalation/deintercalation of protons and high utilization of MnO{sub 2}. The initial specific capacitance of MnO{sub 2} prepared at pH 2.81 was 242.1 F g{sup -1} at 2 mA cm{sup -2} in 2 mol L{sup -1} (NH{sub 4}){sub 2}SO{sub 4} aqueous electrolyte. The capacitance increased by about 8.1% of initial capacitance after 200 cycles at a current density of 100 mA cm{sup -2}.

  14. LOS ALAMOS, New Mexico, July 11, 2011- Los Alamos National Laboratory...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    erosion control work July 11, 2011 Waste removed from canyon bottom LOS ALAMOS, New Mexico, July 11, 2011- Los Alamos National Laboratory work crews over the weekend installed...

  15. LOS ALAMOS, New Mexico, March 16, 2011-Employees of Los Alamos...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    by March 31 for nontraditional student scholarship March 16, 2011 LOS ALAMOS, New Mexico, March 16, 2011-Employees of Los Alamos National Laboratory or students working at the...

  16. LOS ALAMOS, New Mexico, November 1, 2011-Two Los Alamos National...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    engineers help New Mexico small businesses November 1, 2011 Program provides technical expertise LOS ALAMOS, New Mexico, November 1, 2011-Two Los Alamos National Laboratory...

  17. LOS ALAMOS, New Mexico, March 5, 2012-Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    imaging technology, world's fastest camera March 5, 2012 LOS ALAMOS, New Mexico, March 5, 2012-Los Alamos National Laboratory research and development engineer Scott Watson talks...

  18. Algal Biology Program at Los Alamos

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Algal Biology Program at Los Alamos gets a star October 11, 2011 LOS ALAMOS, New Mexico, October 11, 2011-Richard Sayre, one of the nation's top specialists in algae and...

  19. High-Performance Computing at Los

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    tool LOS ALAMOS, N.M., May 29, 2014-At Los Alamos, a supercomputer epicenter where "big data set" really means something, a data middleware project has achieved a milestone...

  20. International Falls, MN Natural Gas Pipeline Imports From Canada (Dollars

    U.S. Energy Information Administration (EIA) Indexed Site

    per Thousand Cubic Feet) Dollars per Thousand Cubic Feet) International Falls, MN Natural Gas Pipeline Imports From Canada (Dollars per Thousand Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1990's 1.71 2.03 2.00 2.33 2000's 2.77 4.85 3.01 -- -- 11.20 -- - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Release Date: 2/29/2016 Next Release Date: 3/31/2016 Referring Pages: U.S.

  1. International Falls, MN Natural Gas Pipeline Imports From Canada (Million

    U.S. Energy Information Administration (EIA) Indexed Site

    Cubic Feet) Million Cubic Feet) International Falls, MN Natural Gas Pipeline Imports From Canada (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1990's 6,373 6,544 6,103 4,857 2000's 3,022 617 602 0 0 22 0 - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Release Date: 2/29/2016 Next Release Date: 3/31/2016 Referring Pages: U.S.

  2. Unoccupied electronic states of icosahedral Al-Pd-Mn quasicrystals:

    Office of Scientific and Technical Information (OSTI)

    Evidence of image potential resonance and pseudogap (Journal Article) | SciTech Connect We study the unoccupied region of the electronic structure of the fivefold symmetric surface of an icosahedral (i) Al-Pd-Mn quasicrystal. A feature that exhibits parabolic dispersion with an effective mass of (1.15±0.1)me and tracks the change in the work function is assigned to an image potential resonance because our density functional calculation shows an absence of band gap in the respective energy

  3. National Laboratory]; Chertkov, Michael [Los Alamos National...

    Office of Scientific and Technical Information (OSTI)

    Chertkov, Michael Los Alamos National Laboratory Construction and Facility Engineering; Energy Conservation, Consumption, & Utilization(32); Energy Planning, Policy, &...

  4. NNMCAB Board Minutes: March 2003 Los Alamos

    Broader source: Energy.gov [DOE]

    Minutes of the March 19, 2003 Board meeting at Los Alamos Site Operations Review of the NNMCAB Recommendation Process

  5. Supercomputing Challenge top winners: Los Alamos schools

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Supercomputing Challenge top winners: Los Alamos schools Supercomputing Challenge top winners: Los Alamos schools Cole Kendrick won the top prize for his research project, "Computer Simulation of Dark Matter Effects on Galaxy Rotation". April 26, 2011 Cole Kendrick Cole Kendrick Contact Steve Sandoval Communications Office (505) 665-9206 Email LOS ALAMOS, New Mexico, April 26, 2011-Los Alamos Middle School student Cole Kendrick won the top prize in the 21st New Mexico Supercomputing

  6. High-Performance Computing at Los

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Performance Computing at Los Alamos announces milestone for key/ value middleware May 26, 2014 Billion inserts-per-second data milestone reached for supercomputing tool LOS ALAMOS, N.M., May 29, 2014-At Los Alamos, a supercomputer epicenter where "big data set" really means something, a data middleware project has achieved a milestone for specialized information organization and storage. The Multi-dimensional Hashed Indexed Middleware (MDHIM) project at Los Alamos National Laboratory

  7. Los Alamos National Laboratory names cleanup subcontractors

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Cleanup subcontractors named Los Alamos National Laboratory names cleanup subcontractors The three companies are Los Alamos Technical Associates (LATA), Portage Inc., and ARSEC Environmental, LLC (ARSEC). August 14, 2009 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos

  8. Los Alamos Public Schools recommended for accreditation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos Schools Recommended For Accreditation Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue:Mar. 2016 all issues All Issues » submit Los Alamos Public Schools recommended for accreditation Los Alamos Public Schools has taken the unusual step of working to obtain accreditation for its entire district. January 1, 2013 dummy image Read our archives Contacts Editor Linda Anderman Email Community Programs Office Kurt Steinhaus Email We

  9. Los Alamos Venture Acceleration Fund accepting

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Funding available for New Mexico businesses February 6, 2013 Los Alamos Venture Acceleration Fund accepting 2013 applications LOS ALAMOS, NEW MEXICO, February 6, 2013-The Venture Acceleration Fund (VAF) of Los Alamos National Security, LLC (LANS), the company that manages and operates Los Alamos National Laboratory for the National Nuclear Security Administration, is accepting applications for the 2013 calendar year. Companies selected will receive awards that can range from $10,000 to $100,000

  10. Los Alamos exceeds waste shipping goal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    exceeds waste shipping goal Los Alamos exceeds waste shipping goal Los Alamos shipped more than 3,000 cubic meters of transuranic (TRU) and mixed low-level waste to the Waste Isolation Pilot Plant and other approved waste disposal facilities. July 8, 2013 A shipment carrying Los Alamos transuranic waste headed to the Waste Isolation Pilot Plant in southeastern New Mexico. A shipment carrying Los Alamos transuranic waste headed to the Waste Isolation Pilot Plant in southeastern New Mexico.

  11. Manhattan Project Sites at Los Alamos

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Gallery » Historic Manhattan Project Sites at Los Alamos National Lab The Manhattan Project National Historical Park The Manhattan Project National Historical Park includes 17 sites at Los Alamos National Laboratory and 13 sites in downtown Los Alamos. These remaining sites represent the world-changing history of the Manhattan Project at Los Alamos. Their preservation and interpretation will bring to life the scientific, social, political, and cultural stories of the men & women who ushered

  12. Los Alamos Needs Assessment | Department of Energy

    Office of Environmental Management (EM)

    Los Alamos Needs Assessment Los Alamos Needs Assessment February 1999 This Needs Assessment for former Los Alamos National Laboratory workers was developed for the purpose of collecting existing information relevant to exposure and health outcomes among former workers, utilizing this information to develop viable methods for contacting these former workers, and providing an initial determination of the most significant worker hazards, problems, and concerns for the site. PDF icon Los Alamos

  13. Los Angeles Data Dashboard | Department of Energy

    Energy Savers [EERE]

    Data Dashboard Los Angeles Data Dashboard The data dashboard for Los Angeles, a partner in the Better Buildings Neighborhood Program. Office spreadsheet icon Los Angeles Data Dashboard More Documents & Publications Austin Energy Data Dashboard Massachusetts -- SEP Data Dashboard Phoenix, Arizona Data Dashboard

  14. Electrochemical performance studies of MnO{sub 2} nanoflowers recovered from spent battery

    SciTech Connect (OSTI)

    Ali, Gomaa A.M.; Tan, Ling Ling; Jose, Rajan; Yusoff, Mashitah M.; Chong, Kwok Feng

    2014-12-15

    Highlights: MnO{sub 2} is recovered from spent zinccarbon batteries as nanoflowers structure. Recovered MnO{sub 2} nanoflowers show high specific capacitance. Recovered MnO{sub 2} nanoflowers show stable electrochemical cycling up to 900 cycles. Recovered MnO{sub 2} nanoflowers show low resistance in EIS data. - Abstract: The electrochemical performance of MnO{sub 2} nanoflowers recovered from spent household zinccarbon battery is studied by cyclic voltammetry, galvanostatic charge/discharge cycling and electrochemical impedance spectroscopy. MnO{sub 2} nanoflowers are recovered from spent zinccarbon battery by combination of solution leaching and electrowinning techniques. In an effort to utilize recovered MnO{sub 2} nanoflowers as energy storage supercapacitor, it is crucial to understand their structure and electrochemical performance. X-ray diffraction analysis confirms the recovery of MnO{sub 2} in birnessite phase, while electron microscopy analysis shows the MnO{sub 2} is recovered as 3D nanostructure with nanoflower morphology. The recovered MnO{sub 2} nanoflowers exhibit high specific capacitance (294 F g{sup ?1} at 10 mV s{sup ?1}; 208.5 F g{sup ?1} at 0.1 A g{sup ?1}) in 1 M Na{sub 2}SO{sub 4} electrolyte, with stable electrochemical cycling. Electrochemical data analysis reveal the great potential of MnO{sub 2} nanoflowers recovered from spent zinccarbon battery in the development of high performance energy storage supercapacitor system.

  15. Lattice Mn3+ Behaviors in Li4Ti5O12/LiNi0.5Mn1.5O4 Full Cells

    SciTech Connect (OSTI)

    Zheng, Jianming; Xiao, Jie; Nie, Zimin; Zhang, Jiguang

    2013-05-28

    High voltage spinels LiNi0.5Mn1.5O4 (LNMO) with different contents of residual Mn3+ ions have been evaluated in full cells using Li4Ti5O12 (LTO) as standard anode. Greatly improved cycling stability has been observed for all spinels in LTO-limited full cell, compared with those in LNMO-limited ones, while the underlying mechanisms are quite different. It has been discovered that the participation of active Mn3+ in the extended cycling and thus its observable contribution to Li+ diffusion kinetics depend on the limiting electrode and the sufficiency of Li+ ions. Potential Mn dissolution has also been discussed to identify the key factors that need to be considered to construct full cells employing high voltage spinel as the cathode.

  16. Spin correlations and electron transport in MnBi:Au films

    SciTech Connect (OSTI)

    Kharel, P.; Skomski, R.; Sellmyer, D. J.

    2011-04-01

    The structural, magnetic, and electron transport properties of Mn{sub 55-x}Au{sub x}Bi{sub 45} (x = 0, 4.5) thin films prepared by magnetron sputtering have been investigated. The magnetization of the MnBi films decreases and the coercivity increases due to Au doping. The temperature dependence of resistivity between 2 to 300 K shows that the films are metallic but the 4.5% Au-doped film shows a Kondo behavior with resistance minimum at 10.2 K. The magnetoresistance is anisotropic and the positive transverse magnetoresistance is significantly enhanced (16.3% at 70 kOe) by Au doping. We interpret these data in terms of a model in which Au atoms preferentially substitute for Mn atoms on the Mn lattice, and some Mn atoms are displaced to interstitial sites in the NiAs structure. These interstitial Mn atoms are coupled antiferromagnetically to the Mn atoms on the original Mn lattice leading to the large decrease in magnetization, Kondo effect, and the positive magnetoresistance.

  17. Magnetic and structural properties of Zn doped MnV{sub 2}O{sub 4}

    SciTech Connect (OSTI)

    Shahi, Prashant; Shukla, K. K.; Singh, Rahul; Chatterjee, Sandip; Das, A.; Ghosh, A. K.; Nigam, A. K.

    2014-04-24

    The magnetization, Neutron diffraction and X-ray diffraction of Zn doped MnV{sub 2}O{sub 4} as a function of temperature have been measured. It has been observed, with increase of Zn the non-linear orientation of Mn spins with the V spins will decrease which effectively decrease the structural transition temperature more rapidly than Curie Temperature.

  18. Room temperature spin-polarizations of Mn-based antiferromagnetic nanoelectrodes

    SciTech Connect (OSTI)

    Yamada, Toyo Kazu; Vazquez de Parga, Amadeo L.

    2014-11-03

    Antiferromagnets produce no stray field, and therefore, a tip electrode made of antiferromagnetic material has been considered to be the most suitable choice to measure such as magnetoresistance (MR) through single isolated magnetic nanoparticles, molecules, and ultrathin films. Spin polarizations (P) of antiferromagnetic 3-nm, 6-nm, and annealed 3-nm Mn films grown on W tips with a bcc(110) apex as well as bulk-NiMn tips were obtained at 300?K by measuring MR in ultrahigh vacuum by means of spin-polarized scanning tunneling microscopy using a layerwise antiferromagnetically stacking bct-Mn(001) film electrode. The Mn-coated tips with coverages of 3 and 6?nm exhibited P values of 1??1% and 3??2%, respectively, which tips likely contain ?- or strained Mn. With a thermal assist, the crystalline quality and the magnetic stability of the film could increase. The annealed tip exhibited P?=?9??2%. The bulk-NiMn tips exhibit spin polarizations of 0 or 6??2% probably depending on the chemical species (Mn or Ni) present at the apex of the tip. Fe-coated W tips were used to estimate the bct-Mn(001) film spin polarization.

  19. Electric-Field Modulation of Curie Temperature in (Ga, Mn)As Field-Effect Transistor Structures with Varying Channel Thickness and Mn Compositions

    SciTech Connect (OSTI)

    Nishitani, Y.; Endo, M.; Chiba, D.; Matsukura, F.; Ohno, H.

    2010-01-04

    We have investigated the change of T{sub C} of ferromagnetic semiconductor (Ga, Mn)As by changing hole concentration p. The field effect transistor structure was utilized to change p. The relation T{sub C}propor top{sup 0.2} is obtained for three samples, despite the difference of their Mn composition and thickness, indicating that the relation holds over 2 decades of p.

  20. Scanning tunneling microscopy reveals LiMnAs is a room temperature anti-ferromagnetic semiconductor

    SciTech Connect (OSTI)

    Wijnheijmer, A. P.; Koenraad, P. M.; Marti, X.; Holy, V.; Cukr, M.; Novak, V.; Jungwirth, T.

    2012-03-12

    We performed scanning tunneling microscopy and spectroscopy on a LiMnAs(001) thin film epitaxially grown on an InAs(001) substrate by molecular beam epitaxy. While the in situ cleavage exposed only the InAs(110) non-polar planes, the cleavage continued into the LiMnAs thin layer across several facets. We combined both topography and current mappings to confirm that the facets correspond to LiMnAs. By spectroscopy we show that LiMnAs has a band gap. The band gap evidenced in this study, combined with the known Neel temperature well above room temperature, confirms that LiMnAs is a promising candidate for exploring the concepts of high temperature semiconductor spintronics based on antiferromagnets.

  1. Los Alamos National Security Corrective Action Plan - Radiological...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Los Alamos National Security Corrective Action Plan - Radiological Release Phase II Los Alamos National Security Corrective Action Plan - Radiological Release Phase II Los Alamos ...

  2. SPIDER: A Predictive Theory For Fission White, Morgan C. [Los...

    Office of Scientific and Technical Information (OSTI)

    John P. Los Alamos National Laboratory; Moller, Peter Los Alamos National Laboratory Nuclear Physics & Radiation Physics(73) Abstract Not Provided Los Alamos National...

  3. Los Angeles Summary of Reported Data | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Summary of Reported Data Los Angeles Summary of Reported Data Summary of data reported by Better Buildings Neighborhood Program partner Los Angeles. PDF icon Los Angeles Summary of ...

  4. Compliance Order, Los Alamos National Security, LLC - July 12...

    Energy Savers [EERE]

    Order, Los Alamos National Security, LLC - July 12, 2007 Compliance Order, Los Alamos National Security, LLC - July 12, 2007 July 12, 2007 Issued to Los Alamos National Security,...

  5. Los Angeles, California: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    US Recovery Act Smart Grid Projects in Los Angeles, California Los Angeles Department of Water and Power Smart Grid Demonstration Project Registered Research Institutions in Los...

  6. Ferromagnetic (Ga,Mn)As nanostructures for spintronic applications

    SciTech Connect (OSTI)

    Wosinski, Tadeusz; Andrearczyk, Tomasz; Figielski, Tadeusz; Makosa, Andrzej; Wrobel, Jerzy; Sadowski, Janusz

    2013-12-04

    Magneto-resistive, cross-like nanostructures have been designed and fabricated by electron-beam lithography patterning and chemical etching from thin epitaxial layers of the ferromagnetic semiconductor (Ga,Mn)As. The nanostructures, composed of two perpendicular nanostripes crossing in the middle of their length, represent four-terminal devices, in which an electric current can be driven through any of the two nanostripes. In these devices, a novel magneto-resistive memory effect, related to a rearrangement of magnetic domain walls in the central part of the device, has been demonstrated. It consists in that the zero-field resistance of a nanostripe depends on the direction of previously applied magnetic field. The nanostructures can thus work as two-state devices providing basic elements of nonvolatile memory cells.

  7. Impedance analysis of MnCoCuO NTC ceramic

    SciTech Connect (OSTI)

    Song, S.G. . E-mail: song-ph0@wpmail.paisley.ac.uk; Ling, Z.; Placido, F.

    2005-07-12

    Impedance spectroscopy is often used to analyse the electrical properties of ceramic materials having high-resistive grain boundaries, such as ZnO and SrTiO{sub 3}. Fewer attempts have been made at using this technique for the analysis of inhomogeneous electronic ceramics consisting of grains with differing composition, such as those occurring in negative temperature coefficient (NTC) thermistors. In this study, we have attempted to adopt ac impedance spectroscopy together with other techniques to analyse an NTC thermistor ceramic material. An Mn, Co and Cu multielements transition metal oxide (MnCoCuO) ceramic was prepared by using homogeneous precipitation employing oxalic acid. This material displayed a typical NTC effect, showing an electrical resistance decrease with temperature when dc electrical measurement was performed. The ac impedance spectroscopy analysis showed that there were two peaks in impedance and conductance versus frequency plot. By using an alternative representation of impedance spectra Z'/f versus Z', three distinct relaxation frequency ranges were identified. They are believed to originate, respectively, from the electrode, phase 1 (rich-Cu phase) and phase 2 (poor-Cu phase) grains existing in this ceramic. SEM observation and EDX analysis clearly showed existence of two distinct phase grains. The resistance values were derived from phases 1 and 2 grains based on ac impedance data. The sum of the resistance values was in good agreement with that from dc measurement in the temperature range of 30-95 deg. C. The material constant, B, for the two phases was also calculated, giving 3100 and 3600 K for phases 1 and 2, respectively.

  8. Seven Los Alamos scientists earn AAAS honors

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Seven Los Alamos scientists earn AAAS honors Seven Los Alamos scientists earn AAAS honors The Fellows are Richard Sayre, John Gordon, Jeanne Robinson, Jaqueline Kiplinger, Bryon Goldstein, Alexander Balatsky and Quanxi Jia. December 15, 2011 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new

  9. Biosurveillance A Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Biosurveillance A Los Alamos National Laboratory Implementation Plan for the Science of Signatures Signatures for biosecurity and public health Biosurveillance at Los Alamos Los Alamos National Laboratory's charge is to develop science and technology that will make the nation safer and enhance our global standing. This breadth of mission scope requires careful internal planning and effective cooperation with external partners and other governmental agencies. The document you are holding is one

  10. A different Big Bang theory: Los Alamos

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    different Big Bang theory: Los Alamos unveils explosives detection expertise February 11, 2015 Collaboration project defeats explosives threats through enhanced detection technologies LOS ALAMOS, N.M., Feb. 11, 2015-Having long kept details of its explosives capabilities under wraps, a team of Los Alamos National Laboratory scientists is now rolling out a collaborative project to defeat explosives threats through enhanced detection technologies. "We're aiming to create a collaboration of

  11. Reliability Technology earns prestigious Los Alamos Award

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Reliability Technology earns prestigious Los Alamos Award Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue:Mar. 2016 all issues All Issues » submit Reliability Technology earns prestigious Los Alamos Award Technology transferred to Procter & Gamble basis for first-ever Feynman Prize September 1, 2013 Feynman Prize winners Michael Hamada, center, and Harry Martz, second from left, hold their Feynman Prizes during a recent awards

  12. Forest fire near Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Forest fire near Los Alamos National Laboratory Forest fire near Los Alamos National Laboratory The Las Conchas fire burning in the Jemez Mountains approximately 12 miles southwest of the boundary of LANL has not entered Lab property at this time. June 26, 2011 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma

  13. Los Alamos National Security supports community nonprofits

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    LANS supports community nonprofits Los Alamos National Security supports community nonprofits Nonprofit organizations are receiving more than $80,300 as a result of the volunteer efforts of LANL employees and retirees. June 1, 2009 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los

  14. Los Alamos director echoes cyber concerns

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos director echoes cyber concerns Los Alamos director echoes cyber concerns Director Charlie McMillan told a gathering of energy executives that securing the electrical grid is a major concern now and it's only becoming more serious. May 21, 2013 Los Alamos National Laboratory Director Charlie McMillan (right), with, from left, Anthony Cugini of the National Energy Technology Laboratory, Thom Mason of Oak Ridge National Laboratory, and Tomas Diaz de la Rubia of Deloitte Consulting LLP.

  15. Los Alamos imager aboard IBEX space mission

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Imager aboard IBEX space mission Los Alamos imager aboard IBEX space mission This is the first in a new series of talks that will focus on the emerging scientific field of quantitative biology. October 17, 2008 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National

  16. Los Alamos plants willows for flood recovery

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    plants willows Los Alamos plants willows for flood recovery The Laboratory's Corrective Actions Program (CAP) planted nearly 10,000 willows to help preserve the Pueblo Canyon wetland after damage from September 2013 floods. June 18, 2014 In a flood recovery effort designed to stop further erosion in Pueblo Canyon, in April, Los Alamos planted nearly 10,000 willows along the stream banks surrounding the wetland. In a flood recovery effort designed to stop further erosion in Pueblo Canyon, Los

  17. Los Alamos scientists advance biomass fuel production

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos scientists advance biomass fuel production Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue:Mar. 2016 all issues All Issues » submit Los Alamos scientists advance biomass fuel production Adapting biomass waste molecules for energy production May 1, 2013 Lab research can yield energy from non-food biomass Lab research can yield energy from non-food biomass Contact Editor Linda Anderman Email Community Programs Office Kurt

  18. National Nuclear Security Administration Los Alamos National

    National Nuclear Security Administration (NNSA)

    National Nuclear Security Administration Los Alamos National Security, LLC Fiscal Year 2014 Performance Evaluation Report (PER) NNSA Los Alamos Field Office Performance Period: October 2013 - September 2014 November 14, 2014 NA-LA November 14, 2014 Executive Summary This Performance Evaluation Report (PER) provides the assessment of Los Alamos National Security, LLC performance for the period of October 1, 2013 through September 30, 2014, as evaluated against the objectives defined in the Fiscal

  19. Enforcement Letter, Los Alamos National Laboratory- October 9, 2001

    Broader source: Energy.gov [DOE]

    Issued to Los Alamos National Laboratory related to Quality Assurance Provisions at the Los Alamos Critical Experiments Facility

  20. Independent Oversight Review, Los Alamos National Laboratory...

    Office of Environmental Management (EM)

    1 Independent Oversight Review, Los Alamos National Laboratory - December 2011 December 2011 Review of the Independent Integrated Safety ManagementIntegrated Work Management...

  1. Independent Oversight Review, Los Alamos National Laboratory...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of Health, Safety and Security (HSS), conducted an independent review of the Los Alamos National Laboratory (LANL) Weapons Engineering Tritium Facility (WETF) safety significant...

  2. Enterprise Assessments Review, Los Alamos National Laboratory...

    Office of Environmental Management (EM)

    - November 2014 November 2014 Review of the Los Alamos National Laboratory Weapons Engineering Tritium Facility Fire Suppression System The Department of Energy Office of...

  3. Los Alamos National Laboratory | Open Energy Information

    Open Energy Info (EERE)

    responsibility "is ensuring the safety, security, and reliability of the nation's nuclear deterrent."2 References Los Alamos Lab: Contacts About Us (LANL) Retrieved...

  4. Independent Activity Report, Los Alamos National Laboratory ...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    July 2012 Independent Activity Report, Los Alamos National Laboratory - July 2012 July 2012 Initial Meeting of Representatives from LANL, LASO, and HS-45 To Review Progress and...

  5. Independent Oversight Review, Los Alamos National Laboratory...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    2013 November 2013 Review of the Los Alamos National Laboratory Radiological Controls Activity-Level Implementation This report documents the results of an independent oversight...

  6. Independent Activity Report, Los Alamos National Laboratory ...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    August 2012 Independent Activity Report, Los Alamos National Laboratory - August 2012 August 2012 Defense Nuclear Facilities Safety Board Visit and Site Lead Planning Activities...

  7. Los Alamos National Laboratory Scientific Excellence for...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... 2015 | 22 UNCLASSIFIED Curiosity (Rover) ChemCam Radioisotope Thermoelectric generator (RTG) Hydrogen & Fuel Cells Electrode Los Alamos Type (ELAT) Battlefield Power Programs ...

  8. Independent Oversight Review, Los Alamos National Laboratory...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Laboratory - December 2013 December 2013 Review of the Technical Area 55 Safety Class Fire Suppression System at Los Alamos National Laboratory This report documents the results...

  9. Enterprise Assessments Review, Los Alamos National Laboratory...

    Broader source: Energy.gov (indexed) [DOE]

    November 2014 Review of the Fire Protection Program at the Los Alamos National Laboratory The Department of Energy Office of Enterprise Assessments was established in May 2014 and...

  10. NNMCAB Board Minutes: March 2002 Los Alamos

    Broader source: Energy.gov [DOE]

    Minutes of the March 27, 2002 Board meeting at Los Alamos Site Operations Presentation LANL, Overlook of Ecological Risk Assessment, Rich Mirenda

  11. Supercomputing Challenge top winners: Los Alamos schools

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the Challenge Process Special Judges Award for their project "Contributing Factors to Obesity, Part 2." Los Alamos Middle School team members Madeline Lockhart, Sean Reynolds, and...

  12. A different Big Bang theory: Los Alamos

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    different Big Bang theory: Los Alamos unveils explosives detection expertise February 11, 2015 Collaboration project defeats explosives threats through enhanced detection...

  13. Dateline Los Alamos: Top Science News

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Science News of 2014 December 22, 2014 Dateline Los Alamos: Top Science News of 2014 Biosurveillance, secure computing, alternative energy, unique capabilities highlight the year....

  14. Ab initio study of Fe{sub 2}MnZ (Al, Si, Ge) Heusler alloy using GGA approximation

    SciTech Connect (OSTI)

    Jain, Vivek Kumar Jain, Vishal Lakshmi, N. Venugopalan, K.

    2014-04-24

    Density functional theory based on FP-LAPW method used to investigate the electronic structure of Fe{sub 2}MnZ, shows that the total spin magnetic moment shows a trend consistent with the SlaterPauling curve. The Fe and Mn magnetic moment depend on choice of Z element although the magnetic moment of Z element is negative and less than 0.1 ?{sub B}. Spin polarization calculations evidence 100% spin polarization for Fe{sub 2}MnSi. Fe{sub 2}MnAl and Fe{sub 2}MnGe show metallic behavior with 93%, 98% spin polarization.

  15. Unoccupied electronic structure of Ni2MnGa ferromagnetic shape memory alloy

    SciTech Connect (OSTI)

    Maniraj, M.; D?Souza, S. W.; Rai, Abhishek; Schlagel, D. L.; Lograsso, T. A.; Chakrabarti, Aparna; Barman, S. R.

    2015-08-20

    Momentum resolved inverse photoemission spectroscopy measurements show that the dispersion of the unoccupied bands of Ni2MnGa is significant in the austenite phase. Furthermore, in the martensite phase, it is markedly reduced, which is possibly related to the structural transition to an incommensurate modulated state in the martensite phase. Finally, based on the first principle calculations of the electronic structure of NiMnGa, we show that the modification of the spectral shape with surface composition is related to change in the hybridization between the Mn 3d and Ni 3d-like states that dominate the unoccupied conduction band.

  16. Recent progress of magnetocaloric effect and magnetic refrigerant materials of Mn compounds (invited)

    SciTech Connect (OSTI)

    Wada, H. Takahara, T.; Katagiri, K.; Ohnishi, T.; Soejima, K.; Yamashita, K.

    2015-05-07

    Magnetocaloric and related properties of Ru and Ni substituted (MnFe){sub 2}(PSi) are presented. It is found that Ru and Ni are effective doping elements to reduce the thermal hysteresis of (MnFe){sub 2}(PSi). The origin of the thermal hysteresis is discussed on the basis of a thermodynamic model. It is shown that the elastic energy is responsible for the thermal hysteresis. We also show recent developments of the production process of Mn compounds in an industrial scale.

  17. Modulation on Ni{sub 2}MnGa(001) surface (Journal Article) | SciTech

    Office of Scientific and Technical Information (OSTI)

    Connect Modulation on Ni{sub 2}MnGa(001) surface Citation Details In-Document Search Title: Modulation on Ni{sub 2}MnGa(001) surface We report periodic modulation on (001) surface of Ni2MnGa ferromagnetic shape memory alloy. For the stoichiometric surface, analysis of the low energy electron diffraction (LEED) spot profiles shows that the modulation is incommensurate. The modulation appears at 200 K, concomitant with the first order structural transition to the martensitic phase. Authors:

  18. Magnetostructural phase transformations in Tb 1-x Mn 2 (Journal Article) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect SciTech Connect Search Results Journal Article: Magnetostructural phase transformations in Tb 1-x Mn 2 Citation Details In-Document Search Title: Magnetostructural phase transformations in Tb 1-x Mn 2 Magnetism and phase transformations in non-stoichiometric Tb1-xMn2 (x = 0.056, 0.039) have been studied as functions of temperature and magnetic field using magnetization, heat capacity, and X-ray powder diffraction measurements. Lowering the temperature, the compounds

  19. Quantum Anomalous Hall Effect in Hg_1-yMn_yTe Quantum Wells

    SciTech Connect (OSTI)

    Liu, Chao-Xing; Qi, Xiao-Liang; Dai, Xi; Fang, Zhong; Zhang, Shou-Cheng; /Stanford U., Phys. Dept.

    2010-03-19

    The quantum Hall effect is usually observed when the two-dimensional electron gas is subjected to an external magnetic field, so that their quantum states form Landau levels. In this work we predict that a new phenomenon, the quantum anomalous Hall effect, can be realized in Hg{sub 1-y}Mn{sub y}Te quantum wells, without the external magnetic field and the associated Landau levels. This effect arises purely from the spin polarization of the Mn atoms, and the quantized Hall conductance is predicted for a range of quantum well thickness and the concentration of the Mn atoms. This effect enables dissipationless charge current in spintronics devices.

  20. Planar Hall effect in Y{sub 3}Fe{sub 5}O{sub 12}/IrMn films

    SciTech Connect (OSTI)

    Zhang, X. Zou, L. K.

    2014-12-29

    The planar Hall effect of IrMn on an yttrium iron garnet (YIG = Y{sub 3}Fe{sub 5}O{sub 12}) was measured in the magnetic field rotating in the film plane. The magnetic field angular dependence of planar Hall resistance (PHR) was observed in YIG/IrMn bilayer at different temperatures, while the Gd{sub 3}Ga{sub 5}O{sub 12}/IrMn film shows constant PHR for different magnetic field angles at both 10 K and 300 K. This provides evidence that IrMn has interfacial spins which can be led by ferrimagnetic layer in YIG/IrMn structure. A hysteresis can be observed in PHR-magnetic field angle loop of YIG/IrMn film at 10 K, indicative of the irreversible switching of IrMn interfacial spins at low temperature.

  1. EA-1156: Effluent Reduction Los Alamos National Laboratory, Los Alamos, New Mexico

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts for the proposal to eliminate industrial effluent from 27 outfalls at the U.S. Department of Energy Los Alamos National Laboratory in Los Alamos, New...

  2. LOS ALAMOS, New Mexico, May 18, 2011-Los Alamos National Laboratory...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    made this award happen."The Laboratory plans a volunteer recognition event June 22 at Fuller Lodge in downtown Los Alamos to recognize employee and retiree volunteers. Los Alamos...

  3. LOS ALAMOS, New Mexico, March 29, 2012-Los Alamos National Laboratory...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    March 29, 2012 Subcontract worth up to 250 million over five years LOS ALAMOS, New Mexico, March 29, 2012-Los Alamos National Laboratory has awarded a master task order...

  4. LOS ALAMOS, New Mexico, June 4, 2013-Los Alamos National Laboratory...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    catalyst could jumpstart e- cars, green energy June 4, 2013 Economical non-precious-metal catalyst capitalizes on carbon nanotubes LOS ALAMOS, New Mexico, June 4, 2013-Los Alamos...

  5. Los Alamos National Security LLC Selected to Manage Los Alamos National Laboratory

    Broader source: Energy.gov [DOE]

    WASHINGTON, D.C. - Secretary of Energy Samuel W. Bodman announced today that Los Alamos National Security LLC has been selected to be the management and operations contractor for Los Alamos...

  6. EIS-0238: Continued Operation of the Los Alamos National Laboratory, Los Alamos, New Mexico

    Broader source: Energy.gov [DOE]

    This EIS evaluates the potential environmental impacts of a proposal to continue operating the Los Alamos National Laboratory (LANL) located in Los Alamos County, in north-central New Mexico. DOE...

  7. LOS ALAMOS, New Mexico, June 4, 2013-Los Alamos National Laboratory...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    catalyst could jumpstart e- cars, green energy June 4, 2013 Economical non-precious-metal catalyst capitalizes on carbon nanotubes LOS ALAMOS, New Mexico, June 4, 2013-Los Alamos ...

  8. LOS ALAMOS, N.M., and MARINA DEL REY, Calif., June 26, 2013-Los...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Tribogenics create highly portable imaging system June 26, 2013 LOS ALAMOS, N.M., and MARINA DEL REY, Calif., June 26, 2013-Los Alamos National Laboratory and Tribogenics, the...

  9. Northern New Mexico LOS ALAMOS, New Mexico, October 29, 2008-Los Alamos National Security, LLC

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    contractor awards LANL Foundation $3 million October 29, 2008 Funds for Educational Enrichment and Outreach in Northern New Mexico LOS ALAMOS, New Mexico, October 29, 2008-Los Alamos National Security, LLC (LANS) granted the Los Alamos National Laboratory (LANL) Foundation $3 million to provide educational enrichment and educational outreach funding for a wide variety of education programs in the seven Northern New Mexico counties of Los Alamos, Mora, Rio Arriba, San Miguel, Sandoval, Santa Fe,

  10. LOS ALAMOS, N.M., July 1, 2014-Los Alamos National Laboratory employees

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    27,000 pledged by Los Alamos National Laboratory employees in 2014 LAESF scholarship drive July 1, 2014 Investing in success of Northern New Mexico students LOS ALAMOS, N.M., July 1, 2014-Los Alamos National Laboratory employees pledged a record $327,000 during the recently completed 2014 Los Alamos Employees' Scholarship Fund (LAESF) drive. The drive encourages Laboratory employees, retirees, and subcontract personnel to donate to a fund that awards college scholarships to Northern New Mexico

  11. LOS ALAMOS, N.M., June 18, 2014-Los Alamos National Laboratory today

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Fukushima with cosmic rays should speed cleanup June 18, 2014 Los Alamos to partner with Toshiba to remotely and safely peer inside nuclear reactors LOS ALAMOS, N.M., June 18, 2014-Los Alamos National Laboratory today announced an impending partnership with Toshiba Corporation to use a Los Alamos technique called muon tomography to safely peer inside the cores of the Fukushima Daiichi reactors and create high-resolution images of the damaged nuclear material inside without ever breaching the

  12. LOS ALAMOS, New Mexico, April 22, 2011-Los Alamos National Laboratory scientists

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Say hello to cheaper hydrogen fuel cells April 22, 2011 Los Alamos scientists document utility of non- precious-metal catalysts LOS ALAMOS, New Mexico, April 22, 2011-Los Alamos National Laboratory scientists have developed a way to avoid the use of expensive platinum in hydrogen fuel cells, the environmentally friendly devices that might replace current power sources in everything from personal data devices to automobiles.In a paper published today in Science, Los Alamos researchers Gang Wu,

  13. LOS ALAMOS, New Mexico, June 25, 2009-Los Alamos National Laboratory today

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    issues statement on Los Alamos historical document retrieval and assessment report June 25, 2009 LOS ALAMOS, New Mexico, June 25, 2009-Los Alamos National Laboratory today provided the following statement about the Draft Final Report of the Los Alamos Historical Document Retrieval and Assessment (LAHDRA) Project. "This is an important document, and we take it seriously. We're in the process of carefully reviewing the draft final report and will submit a technical response during the 30-day

  14. LOS ALAMOS, New Mexico, June 5, 2008-Los Alamos National Laboratory's

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Biosafety committee will hold meeting June 10 June 5, 2008 LOS ALAMOS, New Mexico, June 5, 2008-Los Alamos National Laboratory's Institutional Biosafety Committee will hold its quarterly meeting at 10 a.m. Tuesday, June 10, in meeting room 2 of Mesa Public Library on Central Avenue in downtown Los Alamos. Three applications for research will be reviewed. The meeting is open to the public. The Los Alamos Institutional Biosafety Committee is responsible for reviewing and approving all proposals,

  15. LOS ALAMOS, New Mexico, June 9, 2008- Los Alamos National Laboratory is

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    venture acceleration initiative partners June 9, 2008 LOS ALAMOS, New Mexico, June 9, 2008- Los Alamos National Laboratory is soliciting proposals from those interested in partnering with the Lab and Lab operating contractor Los Alamos National Security to facilitate the identification, creation, and growth of spinoff companies based on Laboratory technology or know-how and is prepared to provide up to $1 million over three years to support the effort. The Los Alamos Venture Acceleration (LAVA)

  16. LOS ALAMOS, New Mexico, September 2, 2008-Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    partner for venture acceleration initiative September 2, 2008 LOS ALAMOS, New Mexico, September 2, 2008-Los Alamos National Laboratory (LANL) and its operating contractor, Los Alamos National Security, LLC, plan to partner with ARCH Venture Partners and Verge Fund for the Los Alamos Venture Acceleration (LAVA) Initiative. The initiative is a pilot program aimed at strategically spinning off technology-based companies from the Laboratory with emphasis on establishing new businesses in Northern

  17. Modeling and Characterization of the Magnetocaloric Effect in Ni2MnGa Materials

    SciTech Connect (OSTI)

    Nicholson, Don M; Odbadrakh, Khorgolkhuu; Rios, Orlando; Hodges, Jason P; Ludtka, Gerard Michael; Porter, Wallace D; Sefat, A. S.; Rusanu, Aurelian; Evans III, Boyd Mccutchen

    2012-01-01

    Magnetic shape memory alloys have great promise as magneto-caloric effect refrigerant materials due to their combined magnetic and structural transitions. Computational and experimental research is reported on the Ni2MnGa material system. The magnetic states of this system have been explored using the Wang-Landau statistical approach in conjunction with the Locally Self-consistent Multiple-Scattering (LSMS) method to explore the magnetic states responsible for the magnet-caloric effect in this material. The effects of alloying agents on the transition temperatures of the Ni2MnGa alloy were investigated using differential scanning calorimetry (DSC) and superconducting quantum interference device (SQUID). Neutron scattering experiments were performed to observe the structural and magnetic phase transformations at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL) on alloys of Ni-Mn-Ga and Ni-Mn-Ga-Cu-Fe. Data from the observations are discussed in comparison with the computational studies.

  18. Synthesis and characterization of MnPS{sub 3} for hydrogen sorption

    SciTech Connect (OSTI)

    Ismail, N.; Temerk, Y.M.; El-Meligi, A.A.; Badr, M.A.; Madian, M.

    2010-05-15

    Single phase MnPS{sub 3} powder was prepared by solid state reaction between Mn, S and P carried out at 650 deg. C in evacuated silica tube. The structure, morphology and sorption characteristics of the prepared solid were investigated. The results revealed that the obtained MnPS{sub 3} compound was capable of adsorbing 3.5 wt% hydrogen at -193 deg. C and a pressure of 30 bar. Little amount of hydrogen (0.07 wt%) was adsorbed at room temperature. The hydrogen adsorption/desorption cycles at various temperatures did not result in irreversible chemical structural changes of the MnPS{sub 3} compound, but the microstructure after hydrogen cycling diminished and became finer. - Graphical abstract: Atomic building of MPS{sub 3}

  19. In-situ Electrical Conductivity of LixMnO2 Nanowires as a Function...

    Office of Scientific and Technical Information (OSTI)

    of LixMnO2 Nanowires as a Function of "x" and Size Authors: Le, Mya ; Liu, Yu ; Wang, Hui ; Dutta, Rajen ; Yan, Wenbo ; Hemminger, John C ; Wu, Ruqian ; Penner, Reginald...

  20. File:USDA-CE-Production-GIFmaps-MN.pdf | Open Energy Information

    Open Energy Info (EERE)

    MN.pdf Jump to: navigation, search File File history File usage Minnesota Ethanol Plant Locations Size of this preview: 776 600 pixels. Full resolution (1,650 1,275...

  1. Spectroscopic properties of (PVA+ZnO):Mn{sup 2+} polymer films

    SciTech Connect (OSTI)

    Rani, Ch.; Raju, D. Siva; Bindu, S. Hima; Krishna, J. Suresh; Raju, Ch. Linga

    2015-05-15

    Electron Paramagnetic Resonance (EPR), optical absorption and infrared spectral studies have been carried out on Mn{sup 2+} ions doped in poly(vinyl alcohol) complexed with zinc oxide polymer films prepared by solution cast technique. The EPR spectra of 1 mol% Mn{sup 2+} ions doped polymer complex (PVA+ZnO) at room temperature exhibit sextet hyperfine structure (hfs), centered at 2.01. The spin-Hamiltonian parameter values indicate that the ground state of Mn{sup 2+} ion in d{sup 5} and the site symmetry around Mn{sup 2+} ions in tetragonally distorted octa hedral site. The optical absorption spectra exhibits two bands centered at 275nm at 437nm. The FTIR spectrum exhibits bands characteristic of stretching and banding vibrations of O-H, C-H and C=C groups.

  2. Effect of Mn substitution on the transport properties of co-sputtered...

    Office of Scientific and Technical Information (OSTI)

    a high spin polarization with a high Curie temperature to be applied in spintronic devices, and in order to further study the effect of Mn contents on the physical properties ...

  3. Electrochemical Performances of LiMnPO4 Synthesized from Non...

    Office of Scientific and Technical Information (OSTI)

    Li1.1MnPO4 exhibits the most stable cycling ability probably because of the existence of a trace amount of Li3PO4 impurity that functions as a solid-state electrolyte on...

  4. X-Ray Spectroscopy of the Mn(4) Ca Cluster in the Water-Oxidation...

    Office of Scientific and Technical Information (OSTI)

    Ca Cluster in the Water-Oxidation Complex of Photosystem II Citation Details In-Document Search Title: X-Ray Spectroscopy of the Mn(4) Ca Cluster in the Water-Oxidation Complex ...

  5. Phase stability of the SrMn O 3 hexagonal perovskite system at high

    Office of Scientific and Technical Information (OSTI)

    pressure and temperature (Journal Article) | DOE PAGES Publisher's Accepted Manuscript: Phase stability of the SrMn O 3 hexagonal perovskite system at high pressure and temperature Title: Phase stability of the SrMn O 3 hexagonal perovskite system at high pressure and temperature Authors: Nielsen, Morten Bormann ; Ceresoli, Davide ; Parisiades, Paraskevas ; Prakapenka, Vitali B. ; Yu, Tony ; Wang, Yanbin ; Bremholm, Martin Publication Date: 2014-12-01 OSTI Identifier: 1180602 Grant/Contract

  6. Phase stability of the SrMn O 3 hexagonal perovskite system at high

    Office of Scientific and Technical Information (OSTI)

    pressure and temperature (Journal Article) | SciTech Connect SciTech Connect Search Results Journal Article: Phase stability of the SrMn O 3 hexagonal perovskite system at high pressure and temperature Citation Details In-Document Search Title: Phase stability of the SrMn O 3 hexagonal perovskite system at high pressure and temperature Authors: Nielsen, Morten Bormann ; Ceresoli, Davide ; Parisiades, Paraskevas ; Prakapenka, Vitali B. ; Yu, Tony ; Wang, Yanbin ; Bremholm, Martin Publication

  7. DETECTION OF $sup 54$Mn IN FOOD SAMPLES (Journal Article) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    DETECTION OF $sup 54$Mn IN FOOD SAMPLES Citation Details In-Document Search Title: DETECTION OF $sup 54$Mn IN FOOD SAMPLES Authors: Neilson, H. ; Yakabe, H.M. Publication Date: 1966-01-01 OSTI Identifier: 4590897 Resource Type: Journal Article Resource Relation: Journal Name: Health Physics (England); Journal Volume: Vol: 12; Other Information: Orig. Receipt Date: 31-DEC-66 Research Org: Food and Drug Administration, Washington, D.C. Country of Publication: Country unknown/Code not available

  8. The structure of the Caenorhabditis elegans manganese superoxide dismutase MnSOD-3-azide complex

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Hunter, Gary J.; Trinh, Chi H.; Bonetta, Rosalin; Stewart, Emma E.; Cabelli, Diane E.; Hunter, Therese

    2015-08-27

    C. elegans MnSOD-3 has been implicated in the longevity pathway and its mechanism of catalysis is relevant to the aging process and carcinogenesis. The structures of MnSOD-3 provide unique crystallographic evidence of a dynamic region of the tetrameric interface (residues 41–54). We have determined the structure of the MnSOD-3-azide complex to 1.77-Å resolution. The analysis of this complex shows that the substrate analog, azide, binds end-on to the manganese center as a sixth ligand and that it ligates directly to a third and new solvent molecule also positioned within interacting distance to the His30 and Tyr34 residues of the substratemore » access funnel. This is the first structure of a eukaryotic MnSOD-azide complex that demonstrates the extended, uninterrupted hydrogen-bonded network that forms a proton relay incorporating three outer sphere solvent molecules, the substrate analog, the gateway residues, Gln142, and the solvent ligand. This configuration supports the formation and release of the hydrogen peroxide product in agreement with the 5-6-5 catalytic mechanism for MnSOD. The high product dissociation constant k₄ of MnSOD-3 reflects low product inhibition making this enzyme efficient even at high levels of superoxide.« less

  9. Hydrothermal synthesis of Mn vanadate nanosheets and visible-light photocatalytic performance for the degradation of methyl blue

    SciTech Connect (OSTI)

    Pei, L.Z. Xie, Y.K.; Pei, Y.Q.; Jiang, Y.X.; Yu, H.Y.; Cai, Z.Y.

    2013-07-15

    Graphical abstract: - Highlights: Mn vanadate nanosheets have been synthesized by simple hydrothermal process. The formation of Mn vanadate nanosheets can be controlled by growth conditions. Mn vanadate nanosheets exhibit good photocatalytic activities for methyl blue. - Abstract: Mn vanadate nanosheets have been synthesized via a facile hydrothermal route using ammonium metavanadate and Mn acetate as the raw materials, polyvinyl pyrrolidone (PVP) as the surfactant. X-ray diffraction (XRD) shows that the Mn vanadate nanosheets are composed of monoclinic MnV{sub 2}O{sub 6} phase. Scanning electron microscopy (SEM) observation indicates that the nanosheets have the average thickness of about 50 nm, length of 210 ?m and width of 800 nm to 2 ?m. The growth process of the Mn vanadate nanosheets has also been discussed based on the analysis of the roles of the growth conditions on the formation of the Mn vanadate nanosheets. The nanosheets show good photocatalytic activities for the degradation of methylene blue (MB) under visible light irradiation. About 72.96% MB can be degraded after visible light irradiation for 1 h over 10 mg Mn vanadate nanosheets in 10 mL MB solution with the concentration of 10 mg L{sup ?1}.

  10. Inverse magnetocaloric effect in Mn{sub 2}NiGa and Mn{sub 1.75}Ni{sub 1.25}Ga magnetic shape memory alloys

    SciTech Connect (OSTI)

    Singh, Sanjay Barman, S. R.; Esakki Muthu, S.; Arumugam, S.; Senyshyn, A.; Rajput, P.; Suard, E.

    2014-02-03

    Inverse magnetocaloric effect is demonstrated in Mn{sub 2}NiGa and Mn{sub 1.75}Ni{sub 1.25}Ga magnetic shape memory alloys. The entropy change at the martensite transition is larger in Mn{sub 1.75}Ni{sub 1.25}Ga, and it increases linearly with magnetic field in both the specimens. Existence of inverse magnetocaloric effect is consistent with the observation that magnetization in the martensite phase is smaller than the austenite phase. Although the Mn content is smaller in Mn{sub 1.75}Ni{sub 1.25}Ga, from neutron diffraction, we show that the origin of inverse magnetocaloric effect is the antiferromagnetic interaction between the Mn atoms occupying inequivalent sites.

  11. City of Los Angeles Bureau of Sanitation

    SciTech Connect (OSTI)

    Not Available

    2004-02-01

    Fact sheet compares emissions testing of Dual-Fuel liquefied natural gas (LNG) and diesel Los Angeles Bureau of Sanitation refuse trucks, performed by DOE's Advanced Vehicle Testing Activity.

  12. Los Alamos Space Weather Summer School

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for Non-U.S Citizens Mentors, Projects Lectures Papers, Reports Photos NSEC IGPPS Space Weather Summer School Los Alamos Space Weather Summer School June 6 - July 29, 2016...

  13. From Earth to Saturn: Los Alamos Achievements

    ScienceCinema (OSTI)

    McMillan, Charlie; Wilson, Cathy; Nekimkem, Howard; Martinez, Johnnie; Martz, Joe; Albright, Brian

    2014-08-13

    A compilation of some of the remarkable achievements of Los Alamos National Laboratory staff over the past 12 months. Originally aired in the June 26, 2008 Director's all-employee meeting.

  14. Environmental surveillance at Los Alamos during 1994

    SciTech Connect (OSTI)

    1996-07-01

    This report describes environmental monitoring activities at Los Alamos National Laboratory for 1994. Data were collected to assess external penetrating radiation, airborne emissions, liquid effluents, radioactivity of environmental materials and food stuffs, and environmental compliance.

  15. Publications of Los Alamos research 1988

    SciTech Connect (OSTI)

    Varjabedian, K.; Dussart, S.A.; McClary, W.J.; Rich, J.A.

    1989-12-01

    This bibliography lists unclassified publications of work done at the Los Alamos National Laboratory for 1988. The entries, which are subdivided by broad subject categories, are cross-referenced with an author index and a numeric index.

  16. National Security Science | Los National Alamos Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos in Space HOPE for all Mankind Nuclear Rockets: to Mars and Beyond The Basics of Nuclear Rocketry Inspired Heat-Pipe Technology Obama on Space Exploration An Interview...

  17. New Rad Lab for Los Alamos

    ScienceCinema (OSTI)

    None

    2010-01-08

    The topping out ceremony for a key construction stage in the Los Alamos National Laboratory's newest facility, the Radiological Laboratory Utility & Office Building. This is part of the National Nu...  

  18. City of Los Angeles- Zoning Code

    Broader source: Energy.gov [DOE]

    Chapter I of Los Angeles' Municipal Code, Height of Building or Structures, provides an exemption for solar energy devices, or similar structures. They may be erected above the height limit...

  19. Los Angeles County- LEED for County Buildings

    Broader source: Energy.gov [DOE]

    In January 2007, the Los Angeles County Board of Supervisors adopted rules to require that all new county buildings greater than 10,000 square feet be LEED Silver certified. All buildings...

  20. Los Alamos National Laboratory sponsors Hazmat Challenge

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the opportunity to network and learn new techniques under realistic conditions in a safe environment. July 27, 2009 Los Alamos National Laboratory sits on top of a once-remote...

  1. Signatures at Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Signatures at Los Alamos National Laboratory Projects that involve signatures are taking place in every corner of the Laboratory. Top. One of the world's most powerful computers, Cielo is a Cray Computing system and a project of ACES, the New Mexico Alliance for Computing at Extreme Scale, a joint project of Sandia and Los Alamos na- tional laboratories. Cielo is the next-generation capability-class platform for the Advanced Simulation and Computing Program, and it allows signa- ture modeling

  2. Dateline Los Alamos: Top Science News

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Science News for 2013 December 24, 2013 HIV vaccine, Mars water, climate change, birth of a black hole, thwarting terrorists among topics of interest LOS ALAMOS, N.M., Dec. 24, 2013-Noteworthy science achievements for 2013 from Los Alamos National Laboratory were as diverse as the scientific disciplines necessary for sustaining the institution's national security mission; they included a ringside seat for the birth of a black hole, novel strategies for an HIV vaccine, sobering insights into the

  3. Los Alamos Space Weather Summer School

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Overview Program Details Local Information Apply Application Process Eligibility Criteria General Information for Applicants Information for Non-U.S Citizens Mentors, Projects Lectures Papers, Reports Photos NSEC » CSES » Space Weather Summer School Los Alamos Space Weather Summer School June 6 - July 29, 2016 Contacts Director Misa Cowee Email Administrative Assistant Mary Wubbena Email Request more information Email Los Alamos Space Weather Summer School 4:05 Applications for the 2016

  4. Los Alamos identifies internal material control issue

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Internal material control issue Los Alamos identifies internal material control issue The error relates to internal inventory and accounting that documents movement of sensitive materials within a small portion of Technical Area 55. February 26, 2009 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and

  5. Los Alamos names Laboratory Fellows for 2015

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos names Laboratory Fellows for 2015 Los Alamos names Laboratory Fellows for 2015 The honorees are Michael Bernardin, Avadh Saxena, Carlos Tome and Piotr Zelenay. January 27, 2016 Piotr Zelenay, Carlos Tome, Michael Bernardin and Avadh Saxena Piotr Zelenay, Carlos Tome, Michael Bernardin and Avadh Saxena Contact Nick Njegomir Communications Office (505) 665-9394 Email "The Laboratory Fellows Organization recognizes researchers for innovative scientific and technical advances in

  6. Los Alamos research and leadership prizes awarded

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Research and leadership prizes awarded Los Alamos research and leadership prizes awarded Commendations for exemplary scientific research and leadership have been bestowed upon Fernando Garzon, Cristian Batista and Irene Beyerlein, by the Laboratory Fellows organization. November 20, 2012 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable

  7. Los Alamos scientist receives prestigious fellowship

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos scientist receives prestigious fellowship Los Alamos scientist receives prestigious fellowship The American Association for the Advancement of Science (AAAS) has awarded the distinction of Fellow to Dave Morris. January 11, 2016 Dave Morris Dave Morris Contact Nick Njegomir Communications Office (505) 665-9394 Email "The AAAS fellowship is a great honor that recognizes Dave's prominence as a chemistry researcher and a scientific leader," said Carol Burns, Deputy Principal

  8. Los Alamos supercomputer remains fastest in world

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Supercomputer remains fastest in world Los Alamos supercomputer remains fastest in world The latest list of the TOP500 computers in the world continued to place the Roadrunner supercomputer as fastest in the world running the LINPACK benchmark. November 18, 2008 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma

  9. Los Alamos wins 2008 Pollution Prevention awards

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2008 Pollution Prevention awards Los Alamos wins 2008 Pollution Prevention awards Winner of two Best-in-Class Pollution Prevention awards and six Environmental Stewardship awards from the National Nuclear Security Administration. February 7, 2008 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new

  10. Los Alamos shipments to Waste Control Specialists

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    8, 2014 Los Alamos shipments to Waste Control Specialists To date, Waste Control Specialists (WCS), a facility in Andrews, Texas, has received and processed seven shipments of defense-generated transuranic waste from Los Alamos National Laboratory. Members of WIPP's Central Characterization Project mobile loading unit and crew went to WCS to safely unload the disposal containers. Plans include completing up to 10 shipments per week to WCS. All shipments are using WIPP's transportation protocols

  11. Los Alamos National Lab: National Security Science

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Science in 60 Flu Video of the Week Forecasting epidemics like weather Real-time data from Wikipedia and social media helps to model disease spread watch cube sat awardees Los Alamos in the News Kudos to "cube" satellite scientists Agile space systems delivered for DOE, military more mosquito Los Alamos in the News Why is Zika now a threat? Population growth, rising temperatures, embryonic immune systems says Lab scientist more Van Allen Belts video screenshot Picture of the Week

  12. Electron scattering mechanisms in Cu-Mn films for interconnect applications

    SciTech Connect (OSTI)

    Misjk, F.; Nagy, K. H.; Radnczi, G.; Lobotka, P.

    2014-08-28

    Electrical properties and corresponding structural features of Cu-Mn alloy films with potential application as barrier and interconnect layers were studied. Cu-Mn films were deposited by DC magnetron sputtering at room temperature on SiO{sub 2} substrates. Electrical resistivity measurements were made as a function of film composition and temperature. The specific resistivity varies linearly with the Mn content showing a maximum of 205???cm at 80 at. % Mn. The temperature coefficient of resistance (TCR) of all alloy films is low, showing non-metallic conductivity for most compositions. Also a minimum TCR has been observed in the 4080 at. % Mn range which was attributed to a magnetic transformation around 200300?K. Electrical resistivity measurements are correlated with the film structure revealed by transmission electron microscopy to clarify the phase regions throughout the composition range. In the 2040 at. % and 7080 at. % Mn ranges, two-phase structures were identified, where Cu- or Mn-rich solid solution grains were surrounded by a thin amorphous covering layer. Based on the revealed phase regions and morphologies electron scattering mechanisms in the system were evaluated by combining the Matthiessen's rule and the Mayadas-Schatzkes theory. Grain boundary reflectivity coefficients (r?=?0.60.8) were calculated from fitting the model to the measurements. The proposed model indicates that, in a binary system, the special arrangement of the two phases results in new scattering mechanisms. The results are of value in optimizing the various parameters needed to produce a suitable barrier layer.

  13. Synthesis of spherical LiMnPO{sub 4}/C composite microparticles

    SciTech Connect (OSTI)

    Bakenov, Zhumabay; Taniguchi, Izumi

    2011-08-15

    Highlights: {yields} We could prepare LiMnPO{sub 4}/C composites by a novel preparation method. {yields} The LiMnPO{sub 4}/C composites were spherical particles with a mean diameter of 3.65 {mu}m. {yields} The LiMnPO{sub 4}/C composite cathode exhibited 112 mAh g{sup -1} at 0.05 C. {yields} It also showed a good rate capability up to 5 C at room temperature and 55 {sup o}C. -- Abstract: Spherical LiMnPO{sub 4}/C composite microparticles were prepared by a combination of spray pyrolysis and spray drying followed by heat treatment and examined as a cathode material for lithium batteries. The structure, morphology and electrochemical performance of the resulting spherical LiMnPO{sub 4}/C microparticles were characterized by X-ray diffraction, field-emission scanning electron microscopy, transmission electronic microscopy and standard electrochemical techniques. The final sample was identified as a single phase orthorhombic structure of LiMnPO{sub 4} and spherical powders with a geometric mean diameter of 3.65 {mu}m and a geometric standard deviation of 1.34. The electrochemical cells contained the spherical LiMnPO{sub 4}/C microparticles exhibited first discharge capacities of 112 and 130 mAh g{sup -1} at 0.05 C at room temperature and 55 {sup o}C, respectively. These also showed a good rate capability up to 5 C at room temperature and 55 {sup o}C.

  14. Workers Complete Demolition at Historic Los Alamos Site

    Broader source: Energy.gov [DOE]

    LOS ALAMOS, N.M. – A team lead by the Environmental Management Los Alamos Field Office recently completed demolition of a building at a historic Los Alamos site.

  15. Notice of Intent to Investigate, Los Alamos National Security...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    April 27, 2015 Dr. Charles F. McMillan, President Los Alamos National Security, LLC Los Alamos National Laboratory Mailstop A 100, Drop Point 03140071S Bikini Atoll Road, TA-3 Los...

  16. Mn-Stabilized Zirconia: From Imitation Diamonds to a New Potential High-T{sub C} Ferromagnetic Spintronics Material

    SciTech Connect (OSTI)

    Ostanin, S.; Ernst, A.; Sandratskii, L. M.; Bruno, P.; Daene, M.; Hergert, W.; Mertig, I.; Hughes, I. D.; Staunton, J. B.; Kudrnovsky, J.

    2007-01-05

    From the basis of ab initio electronic structure calculations which include the effects of thermally excited magnetic fluctuations, we predict Mn-stabilized cubic zirconia to be ferromagnetic above 500 K. We find this material, which is well known both as an imitation diamond and as a catalyst, to be half-metallic with the majority and minority spin Mn impurity states lying in zirconia's wide gap. The Mn concentration can exceed 40%. The high-T{sub C} ferromagnetism is robust to oxygen vacancy defects and to how the Mn impurities are distributed on the Zr fcc sublattice. We propose this ceramic as a promising future spintronics material.

  17. Properties of Ga{sub 1-x}Mn{sub x}As with high x (>0.1)

    SciTech Connect (OSTI)

    Chiba, D.; Yu, K. M.; Walukiewicz, W.; Nishitani, Y.; Matsukura, F.; Ohno, H.

    2008-04-01

    We have investigated the magnetic and the crystalline properties of a set of Ga{sub 1-x}Mn{sub x}As layers with high nominal Mn compositions (x=0.101-0.198). Magnetization measurements and combined channeling Rutherford backscattering (c-RBS) and particle induced x-ray emission (c-PIXE) measurements have been performed to determine the effective Mn composition x{sub eff} and the fraction of Mn atoms at various lattice sites. Here, x{sub eff} determined from magnetization measurements, which increases with increasing x, is consistent with the results determined from c-RBS-PIXE measurements.

  18. Change LOS ALAMOS, N.M., May 19, 2015-Researchers at Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Drought-induced tree mortality accelerating in forests May 19, 2015 Los Alamos' paper published in Nature Climate Change LOS ALAMOS, N.M., May 19, 2015-Researchers at Los Alamos National Laboratory have found that drought and heat-induced tree mortality is accelerating in many forest biomes as a consequence of a warming climate in their paper "Darcy's law predicts widespread forest mortality under climate warming," published in the journal Nature Climate Change. "The warming

  19. NSTec Los Alamos Earns DOE-VPP STAR For Safety National Security Technologies (NSTec) Los

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    NSTec Los Alamos Earns DOE-VPP STAR For Safety National Security Technologies (NSTec) Los Alamos Operations office has been recognized as one of the safest contractors in the National Nuclear Security Administration (NNSA) complex with the announcement that the U.S. Department of Energy Voluntary Protection Program (DOE-VPP) has recognized them at the STAR level, its highest rating. Los Alamos Operations (LAO) is a New Mexico operation of NSTec, the managing and operational contractor for the

  20. Los Alamos, New Mexico, December 14, 2009-Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    LANL pathogen detector gains corporate partner December 14, 2009 Optical biosensor uses tiny laser to detect range of pathogens Los Alamos, New Mexico, December 14, 2009-Los Alamos National Laboratory has executed an agreement with Biomagnetics Diagnostics Corporation (BMGP) for the further development of a diagnostic tool known as an optical biosensor. Los Alamos, whose staff developed the prototype bench-top and hand-held biosensors for the detection of human and animal pathogens, has provided

  1. Los Alamos, New Mexico, January 8, 2010-Los Alamos National Laboratory has

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    top 10 science stories of 2009 January 8, 2010 Los Alamos achievements from supercomputing to biofuels Los Alamos, New Mexico, January 8, 2010-Los Alamos National Laboratory has identified the Top 10 Laboratory science stories of 2009 based on global viewership of online media content and major programmatic milestones. "Often our top breakthroughs in terms of scientific impact are also the ones that garner the most attention in the media," said Terry Wallace, Laboratory principal

  2. Los Alamos, New Mexico, September 8, 2009- Los Alamos National Laboratory scientists

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Artificial" brains, electrical grids, and disease modeling: Los Alamos science discoveries unveiled September 15 September 8, 2009 Los Alamos, New Mexico, September 8, 2009- Los Alamos National Laboratory scientists will share their discoveries with the public and their peers at the Laboratory's first LDRD (Laboratory-Directed Research and Development) Day September 15. More than 40 researchers who participated in a spirited Labwide competition to earn funding through the National Nuclear

  3. LOS ALAMOS, N.M., Dec. 22, 2014-Los Alamos National Laboratory today

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    science news of 2014 December 22, 2014 Biosurveillance, secure computing, alternative energy, unique capabilities highlight the year LOS ALAMOS, N.M., Dec. 22, 2014-Los Alamos National Laboratory today announced its annual top science stories of 2014. The 12 stories selected from diverse disciplines supporting Los Alamos's national security mission range from transferring fool-proof computer encryption techniques to market, to using social media for forecasting diseases, creating a virtual human

  4. LOS ALAMOS, N.M., Feb. 23, 2015-Nine Los Alamos National Laboratory scientists

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    join prestigious ranks of APS fellows February 23, 2015 LOS ALAMOS, N.M., Feb. 23, 2015-Nine Los Alamos National Laboratory scientists are new Fellows of the American Physical Society. Cristian Batista, Malcolm Boshier, Dana Dattelbaum, Stephen Doorn, Michelle Espy, George Rodriguez, Avadh Saxena, Sergei Tretiak and Lin Yin are the new honorees. "Selection as American Physical Society fellows is de facto proof of the vibrant engagement Los Alamos scientists are having with the larger

  5. LOS ALAMOS, N.M., May 13, 2013-Today, Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Domestic production of medical isotope Mo-99 moves a step closer May 13, 2013 Los Alamos team produces molybdenum-99 from irradiation of low enriched uranium solution LOS ALAMOS, N.M., May 13, 2013-Today, Los Alamos National Laboratory announced that for the first time, irradiated low-enriched uranium (LEU) fuel has been recycled and reused for molybdenum-99 (Mo-99) production, with virtually no losses in Mo-99 yields or uranium recovery. This demonstrates the viability of the separation

  6. LOS ALAMOS, N.M., Nov. 10, 2015-Two Los Alamos National Laboratory employees

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Helping New Mexico small businesses earns recognition for Los Alamos National Lab employees November 10, 2015 Program provides access to technical expertise and laboratory capabilities LOS ALAMOS, N.M., Nov. 10, 2015-Two Los Alamos National Laboratory employees were recently recognized in an awards ceremony for providing their technical expertise and access to lab capabilities to help small businesses through the New Mexico Small Business Assistance Program. Don Quintana, a group leader within

  7. LOS ALAMOS, NEW MEXICO, July 17, 2012-Two Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    immunity study could pave way for vaccine development July 17, 2012 Los Alamos scientists among Duke-led consortium LOS ALAMOS, NEW MEXICO, July 17, 2012-Two Los Alamos National Laboratory scientists are among the team recently funded to explore ways to create the precise immune factors needed for effective vaccines against HIV.The Duke University-led consortium will largely concentrate on inducing broadly neutralizing antibodies that can prevent HIV-1 infection, as well as on generating

  8. LOS ALAMOS, New Mexico, April 22, 2009-Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Breaking the ties that bind: New hope for biomass fuels April 22, 2009 Los Alamos researchers crack code for binding lignocellulosic biomass LOS ALAMOS, New Mexico, April 22, 2009-Los Alamos National Laboratory researchers have discovered a potential chink in the armor of fibers that make the cell walls of certain inedible plant materials so tough. The insight ultimately could lead to a cost-effective and energy-efficient strategy for turning biomass into alternative fuels. In separate papers

  9. LOS ALAMOS, New Mexico, August 20, 2010-Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    employees collect backpacks, school supplies for area school children August 20, 2010 LOS ALAMOS, New Mexico, August 20, 2010-Los Alamos National Laboratory employees donated more than 1,000 backpacks and thousands of school supplies, including pencils, pens, and notebooks during the Lab's annual School Supply Drive. The drive culminated in a Back-to-School Bash in downtown Los Alamos earlier this week that included a 3-kilometer fun walk and run and a backpack-stuffing contest where teams of

  10. LOS ALAMOS, New Mexico, December 14, 2010-Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    local small business for post-Recovery Act cleanup contract December 14, 2010 Company will remove buried waste pipes from historic Cold War site LOS ALAMOS, New Mexico, December 14, 2010-Los Alamos National Laboratory today announced it has selected a local small business, Los Alamos Technical Associates (LATA), to perform follow-on cleanup work through 2014 at the site of the world's first large-scale plutonium processing lab. The approximately $8 million contract calls for removal of more than

  11. LOS ALAMOS, New Mexico, December 16, 2010-Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    record year for environmental cleanup December 16, 2010 New LANL marks set for field investigations, shipments to WIPP LOS ALAMOS, New Mexico, December 16, 2010-Los Alamos National Laboratory finished 12 months worth of environmental cleanup by breaking LANL records in several areas as fiscal year 2010 ended. Los Alamos personnel conducted more field investigations and cleanup campaigns than ever and completed a record number of Lab shipments to the Waste Isolation Pilot Plant (WIPP) in southern

  12. LOS ALAMOS, New Mexico, January 7, 2009-Los Alamos National Laboratory (LANL)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Venture Acceleration Fund recipients January 7, 2009 LOS ALAMOS, New Mexico, January 7, 2009-Los Alamos National Laboratory (LANL) has selected Retriever Technology, Elemetric Instruments, Star Cryoelectronics, and Veezyon as recipients of awards from the Los Alamos National Security, LLC Venture Acceleration Fund. The Laboratory's Venture Acceleration Fund provides investments of up to $100,000 to regional entrepreneurs, companies, investors, or strategic partners that use LANL technology or

  13. LOS ALAMOS, New Mexico, July 9, 2008- Los Alamos National Laboratory is

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    venture acceleration fund July 9, 2008 LOS ALAMOS, New Mexico, July 9, 2008- Los Alamos National Laboratory is soliciting ideas for projects that facilitate the creation and growth of regional businesses based on Los Alamos National Laboratory (LANL) technology or expertise. The Laboratory's Venture Acceleration Fund (VAF) will provide investments of up to $100,000 to facilitate projects with regional entrepreneurs, companies, investors, or strategic partners. The deadline for submission is July

  14. LOS ALAMOS, New Mexico, March 10, 2009-Los Alamos National Laboratory has

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    awards Recovery Act contract worth up to $100 million March 10, 2010 Small business preselected for waste disposal work LOS ALAMOS, New Mexico, March 10, 2009-Los Alamos National Laboratory has selected a small business to perform up to $100 million in waste transportation and disposal work under the American Reinvestment and Recovery Act, the Lab announced today. TerranearPMC, LLC, a Texas company with a Los Alamos office and a long history of supporting LANL environmental work, will haul

  15. LOS ALAMOS, New Mexico, March 31, 2010-A Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Carbon nanostructures-elixir or poison? March 31, 2010 Los Alamos researchers find a case where size really does matter LOS ALAMOS, New Mexico, March 31, 2010-A Los Alamos National Laboratory toxicologist and a multidisciplinary team of researchers have documented potential cellular damage from "fullerenes"-soccer-ball-shaped, cage-like molecules composed of 60 carbon atoms. The team also noted that this particular type of damage might hold hope for treatment of Parkinson's disease,

  16. LOS ALAMOS, New Mexico, May 18, 2011-Los Alamos National Laboratory has

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    named 2010 top corporate volunteer organization May 18, 2011 LOS ALAMOS, New Mexico, May 18, 2011-Los Alamos National Laboratory has earned an award as the top corporate volunteer organization among large employers in VolunteerMatch's network of more than 140 leading companies and brands.Debbi Wersonick of Los Alamos National Laboratory's Community Programs Office, coordinator of volunteer programs at the Laboratory, traveled to Chicago to receive the Corporate Volunteer Program of the Year

  17. Independent Oversight Inspection, Los Alamos National Laboratory - January

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    2007 | Department of Energy Los Alamos National Laboratory - January 2007 Independent Oversight Inspection, Los Alamos National Laboratory - January 2007 January 2007 Independent Oversight Inspection of Emergency Management at the Los Alamos site office and Los Alamos National Laboratory The U.S. Department of Energy (DOE) Office of Independent Oversight inspected the emergency management program at DOE's Los Alamos Site Office (LASO) and Los Alamos National Laboratory (LANL) in

  18. A picture of leadership: portrait helps commemorate Los Alamos anniversary

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Portrait helps commemorate Los Alamos anniversary A picture of leadership: portrait helps commemorate Los Alamos anniversary The family of Gen. Leslie Groves donated his official military portrait to the Los Alamos Historical Society. April 5, 2013 Heather McClenahan and Mike Wheeler of the Los Alamos Historical Society unveil the portrait with Charlie McMillan, director of Los Alamos National Laboratory Heather McClenahan and Mike Wheeler of the Los Alamos Historical Society unveil the portrait

  19. LOS ALAMOS, N.M., Oct. 31, 2013-Los Alamos National Laboratory...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the Deaf, 1060 Cerrillos Road, Santa Fe * Nov. 15, Taos Convention Center, 120 Civic Plaza Drive, Taos. Sponsored by the Fellows of Los Alamos National Laboratory, the Frontiers...

  20. LOS ALAMOS, N.M., June 18, 2014-Los Alamos National Laboratory...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Fukushima with cosmic rays should speed cleanup June 18, 2014 Los Alamos to partner with ... to safely peer inside the cores of the Fukushima Daiichi reactors and create ...

  1. LOS ALAMOS, N.M., July 27, 2015- Four Los Alamos National Laboratory...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    complicated problem by identifying, retrieving and analyzing smaller subsets of data. Hugh Greenberg, of the Laboratory's System Integration group, and his team of Los Alamos...

  2. LOS ALAMOS, N.M., Dec. 17, 2015-Scientists at Los Alamos National...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2015-Scientists at Los Alamos National Laboratory have developed a new, more thorough method for detecting underground nuclear explosions (UNEs) by coupling two fundamental...

  3. LOS ALAMOS, N.M., July 12, 2013 - Los Alamos National Laboratory Director

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Importance of science education to national security will be Los Alamos director's topic at TEDxABQ July 12, 2013 Importance of science education to national security will be Los Alamos director's topic at TEDxABQ LOS ALAMOS, N.M., July 12, 2013 - Los Alamos National Laboratory Director Charlie McMillan will be one of 17 speakers at this year's TEDxABQ, event organizers announced this week. TEDxABQ, scheduled for Saturday, September 7 at Popejoy Hall, is an independently organized event in

  4. LOS ALAMOS, N.M., July 27, 2015- Four Los Alamos National Laboratory projects

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Los Alamos projects selected as R&D 100 Award finalists July 27, 2015 LOS ALAMOS, N.M., July 27, 2015- Four Los Alamos National Laboratory projects have been selected as finalists for the 2015 R&D 100 awards, which honor the top 100 proven technological advances of the past year as determined by a panel selected by R&D Magazine. The Los Alamos finalists are: LARS: Lab-scale Asynchronous Radiographic System, PipeLIBS: A Self-Contained Elemental Analysis Tool for the Oil Industry,

  5. LOS ALAMOS, N.M., June 4, 2013-Los Alamos National Laboratory researchers

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    laser-driven neutrons to stop nuclear smugglers June 4, 2013 Los Alamos shows first nuclear material detection by single short-pulse-laser-driven neutron source LOS ALAMOS, N.M., June 4, 2013-Los Alamos National Laboratory researchers have successfully demonstrated for the first time that laser-generated neutrons can be enlisted as a useful tool in the War on Terror. The international research team in February used the short-pulse laser at Los Alamos's TRIDENT facility to generate a neutron beam

  6. LOS ALAMOS, N.M., March 19, 2015-Los Alamos National Laboratory researcher

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    to explore new strategies for diagnosing challenging diseases March 19, 2015 First talk is Tuesday, March 24 in Los Alamos LOS ALAMOS, N.M., March 19, 2015-Los Alamos National Laboratory researcher Harshini Mukundan discusses the re-emergence of tuberculosis in a series of three lectures called "The Microbe Strikes Back: The Return of Tuberculosis." The talks, which focus on how effective diagnosis can prevent its spread and save lives, take place in Los Alamos, Albuquerque and Santa

  7. LOS ALAMOS, New Mexico, May 1, 2013-Los Alamos National Laboratory scientist

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Exploring Mars with Curiosity subject of next Los Alamos National Laboratory Frontiers in science lectures May 1, 2013 LOS ALAMOS, New Mexico, May 1, 2013-Los Alamos National Laboratory scientist Roger Wiens talks about the NASA Mars Curiosity rover, its journey to Mars and some of its discoveries on the Red Planet thus far in a series of Frontiers in Science presentations beginning May 7 in the Duane Smith Auditorium at Los Alamos High School. Wiens repeats his talk on: * May 9 at the New

  8. LOS ALAMOS, New Mexico, August 20, 2012-Scientists at Los Alamos...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Laser research shows promise for cancer treatment August 20, 2012 New insights gained on how lasers generate ions in dense plasmas LOS ALAMOS, New Mexico, August 20,...

  9. LOS ALAMOS, N.M., July 24, 2014-Dipen Sinha of Los Alamos National...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    returning to Los Alamos in 1986 as a staff scientist and developed ultra-high speed measurement techniques, femtosecond lasers, thermionic integrated circuits and...

  10. LOS ALAMOS, New Mexico, April 26, 2011-Los Alamos Middle School...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the Challenge Process Special Judges Award for their project "Contributing Factors to Obesity, Part 2." - 3 - * Los Alamos Middle School team members Madeline Lockhart, Sean...

  11. Enhanced ferromagnetic order in Sr{sub 4}Mn{sub 3}O{sub 3}(GeO{sub 4}){sub 3} featuring canted [MnO{sub 4}]{sub ?} spin chains of mixed-valent Mn(III)/Mn(IV). Aliovalent substitution of the Sr{sub 4?x}Ln{sub x}Mn{sup III}{sub 2+x}Mn{sup IV}{sub 1?x}O{sub 3}(GeO{sub 4}){sub 3} solid-solution

    SciTech Connect (OSTI)

    West, J. Palmer; Sulejmanovic, Dino; Becht, Gregory; He, Jian; Hitchcock, Dale; Yan, Yonggao; Hwu, Shiou-Jyh

    2013-10-15

    Crystals of Sr{sub 4?x}Ln{sub x}Mn{sub 3}O{sub 3}(GeO{sub 4}){sub 3} (x=0; x?0.15 for Ln=La, Pr, Nd, Sm. Eu, Gd, Dy; x?0.3 for Ln=Gd) were isolated upon using high-temperature, solid-state methods in molten-salt media. These compounds are isostructural with the previously reported Na{sub 3}LnMn{sub 3}O{sub 3}(AsO{sub 4}){sub 3} (Ln=La, Sm, Gd) series that contains the same [MnO{sub 4}]{sub ?} spin chains. The synthesis of the Sr{sub 4}Mn{sub 3}O{sub 3}(GeO{sub 4}){sub 3} (x=0) phase was carried out by a double aliovalent substitution with respect to the Sr{sup 2+} and Ge{sup 4+} ions that replace Na{sup +}/Ln{sup 3+} and As{sup 5+} in Na{sub 3}LnMn{sub 3}O{sub 3}(AsO{sub 4}){sub 3}, respectively. The title series contains mixed-valent Mn(III)/Mn(IV) and shows a limited range of solid solution, both of which were not observed in the previously reported Na{sub 3}LnMn{sub 3}O{sub 3}(AsO{sub 4}){sub 3} series. To form the Sr{sub 4?x}Ln{sub x}Mn{sub 3}O{sub 3}(GeO{sub 4}){sub 3} solid solution, one of the Sr{sup 2+} sites, i.e., the original Ln-site in Na{sub 3}LnMn{sub 3}O{sub 3}(AsO{sub 4}){sub 3}, is partially substituted by Ln{sup 3+} in a statistical disorder of Sr{sub 1?x}/Ln{sub x}. Initial magnetic investigations of selected derivatives reveal higher ferromagnetic ordering temperatures than those reported for the Na{sub 3}LnMn{sub 3}O{sub 3}(AsO{sub 4}){sub 3} series, presumably attributed to a lesser degree of canting as a result of introducing non-JahnTeller Mn{sup 4+} ions. Also intriguing is the observation of multiple anomalies at low temperatures which appear to be of electronic origins. - Graphical abstract: Sr{sub 4?x}Ln{sub x}Mn(III){sub 2+x}Mn(IV){sub 1?x}O{sub 3}(GeO{sub 4}){sub 3}. Display Omitted - Highlights: Double aliovalent substitution: Sr{sub 4}Mn{sub 3}O{sub 3}(GeO{sub 4}){sub 3} with respect to Na{sub 3}LnMn{sub 3}O{sub 3}(AsO{sub 4}){sub 3}. Solid solution with respect to statistical disorder of Sr{sub 1?x}Ln{sub x} in one of the two Sr sites. Mn{sup 3+}/Mn{sup 4+} magnetic ions are spatially arranged in a triangular kagom fashion. Enhanced ferromagnetic ordering attributed to doping non-JahnTeller Mn{sup 4+}.

  12. Comparison of LiMnPO4 made by Combustion and Hydrothermal Syntheses

    SciTech Connect (OSTI)

    Chen, Jiajun; Doeff, Marca M.; Wang, Ruigang

    2008-05-15

    Among the olivine-structured metal phosphate family, LiMnPO{sub 4} exhibits a high discharge potential (4V), which is still compatible with common electrolytes, making it interesting for use in the next generation of Li ion batteries. The extremely low electronic conductivity of this material severely limits its electrochemical performance, however. One strategy to overcome this limitation is to make LiMnPO{sub 4} nanoparticulate to decrease the diffusion distance. Another is to add a carbon or other conductive coating in intimate contact with the nanoparticles of the main phase, as is commonly done with LiFePO{sub 4}. The electrochemical performance of LiFePO{sub 4} is highly dependent on the quality of the carbon coatings on the particles [1-2], among other variables. Combustion synthesis allows the co-synthesis of nanoparticles coated with carbon in one step. Hydrothermal synthesis is used industrially to make LiFePO{sub 4} cathode materials [3] and affords a good deal of control over purity, crystallinity, and particle size. A wide range of olivine-structured materials has been successfully prepared by this technique [4], including LiMnPO{sub 4} in this study. In this paper, we report on the new synthesis of nano-LiMnPO{sub 4} by a combustion method. The purity is dependent upon the conditions used for synthesis, including the type of fuel and precursors that are chosen. The fuel to nitrate ratio influences the combustion temperature, which determines the type and amount of carbon found in the LiMnPO{sub 4} composites. This can further be modified by use of carbon structural modifiers added during a subsequent (optional) calcination step. Figure 1 shows a transmission electron microscopy (TEM) image of the spherical nano-sized LiMnPO{sub 4} particles typically formed by combustion synthesis. The average particle size is around 30 nm, in agreement with values obtained by the Rietveld refinement of XRD patterns. The small size of the particles cause the peak broadening evident in the pattern of combustion formed LiMnPO{sub 4}, shown in Figure 2. Figure 2 also shows a pattern of hydrothermally prepared LiMnPO{sub 4}, which is sub-micron in size. In this presentation, we will show how the crystallographic parameters, particle size, particle morphology, and carbon content and structure impact the electrochemical properties of the LiMnPO{sub 4}/C composites produced by these methods.

  13. Comparison of LiMnPO4 made by Combustion and Hydrothermal Syntheses

    SciTech Connect (OSTI)

    Chen, Jiajun; Doeff, Marca M.; Wang, Ruigang

    2008-10-12

    Among the olivine-structured metal phosphate family, LiMnPO{sub 4} exhibits a high discharge potential (4V), which is still compatible with common electrolytes, making it interesting for use in the next generation of Li ion batteries. The extremely low electronic conductivity of this material severely limits its electrochemical performance, however. One strategy to overcome this limitation is to make LiMnPO{sub 4} nanoparticulate to decrease the diffusion distance. Another is to add a carbon or other conductive coating in intimate contact with the nanoparticles of the main phase, as is commonly done with LiFePO{sub 4}. The electrochemical performance of LiFePO{sub 4} is highly dependent on the quality of the carbon coatings on the particles, among other variables. Combustion synthesis allows the co-synthesis of nanoparticles coated with carbon in one step. Hydrothermal synthesis is used industrially to make LiFePO{sub 4} cathode materials and affords a good deal of control over purity, crystallinity, and particle size. A wide range of olivine-structured materials has been successfully prepared by this technique, including LiMnPO{sub 4} in this study. In this paper, we report on the new synthesis of nano-LiMnPO{sub 4} by a combustion method. The purity is dependent upon the conditions used for synthesis, including the type of fuel and precursors that are chosen. The fuel to nitrate ratio influences the combustion temperature, which determines the type and amount of carbon found in the LiMnPO{sub 4} composites. This can further be modified by use of carbon structural modifiers added during a subsequent (optional) calcination step. Figure 1 shows a transmission electron microscopy (TEM) image of the spherical nano-sized LiMnPO{sub 4} particles typically formed by combustion synthesis. The average particle size is around 30 nm, in agreement with values obtained by the Rietveld refinement of XRD patterns. The small size of the particles cause the peak broadening evident in the pattern of combustion formed LiMnPO{sub 4}, shown in Figure 2. Figure 2 also shows a pattern of hydrothermally prepared LiMnPO{sub 4}, which is sub-micron in size. In this presentation, we will show how the crystallographic parameters, particle size, particle morphology, and carbon content and structure impact the electrochemical properties of the LiMnPO{sub 4}/C composites produced by these methods.

  14. Disorder dependent half-metallicity in Mn{sub 2}CoSi inverse Heusler alloy

    SciTech Connect (OSTI)

    Singh, Mukhtiyar; Saini, Hardev S.; Thakur, Jyoti; Reshak, Ali H.; Kashyap, Manish K.

    2013-12-15

    Heusler alloys based thin-films often exhibit a degree of atomic disorder which leads to the lowering of spin polarization in spintronic devices. We present ab-initio calculations of atomic disorder effects on spin polarization and half-metallicity of Mn{sub 2}CoSi inverse Heusler alloy. The five types of disorder in Mn{sub 2}CoSi have been proposed and investigated in detail. The A2{sub a}-type and B2-type disorders destroy the half-metallicity whereas it sustains for all disorders concentrations in DO{sub 3a}- and A2{sub b}-type disorder and for smallest disorder concentration studied in DO{sub 3b}-type disorder. Lower formation energy/atom for A2{sub b}-type disorder than other four disorders in Mn{sub 2}CoSi advocates the stability of this disorder. The total magnetic moment shows a strong dependence on the disorder and the change in chemical environment. The 100% spin polarization even in the presence of disorders explicitly supports that these disorders shall not hinder the use of Mn{sub 2}CoSi inverse Heusler alloy in device applications. - Graphical abstract: Minority-spin gap (E{sub g↓}) and HM gap (E{sub sf}) as a function of concentrations of various possible disorder in Mn{sub 2}CoSi inverse Heusler alloy. The squares with solid line (black color)/dotted line (blue color)/dashed line (red color) reperesents E{sub g↓} for DO{sub 3a}-/DO{sub 3b}-/A2{sub b}-type disorder in Mn{sub 2}CoSi and the spheres with solid line (black color)/dottedline (blue color)/dashed line (red color) represents E{sub sf} for DO{sub 3a}-/DO{sub 3b}-/A2{sub b}-type disorder in Mn{sub 2}CoSi. - Highlights: • The DO{sub 3}- and A2-type disorders do not affect the half-metallicity in Mn{sub 2}CoSi. • The B2-type disorder solely destroys half-metallicity in Mn{sub 2}CoSi. • The A2-type disorder most probable to occur out of all three types. • The total spin magnetic moment strongly depends on the disorder concentrations.

  15. Los Alamos improves biomass-to-fuel process

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    Biomass-to-fuel Process Improved Los Alamos improves biomass-to-fuel process Los Alamos scientists and collaborators published an article in the scientific journal Nature Chemistry...

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    Taming the Grid: Dynamic Load Composition Quantification at the Distribution-Transformer Level Flynn, Eric B. Los Alamos National Laboratory; Holby, Edward F. Los Alamos...

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  19. Los Alamos catalyst could jumpstart e-cars, green energy

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    and certain electrolyzers. Economical non-precious-metal catalyst capitalizes on carbon nanotubes LOS ALAMOS, New Mexico, June 4, 2013-Los Alamos National Laboratory...

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    of Violation issued to Los Alamos National Security, LLC related to the Electrical Shock that occurred at Technical Area 16 at the Los Alamos National Laboratory On October...

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    advances in nuclear fission theory: pre- and post-scission physics Talou, Patrick Los Alamos National Laboratory; Kawano, Toshihiko Los Alamos National Laboratory; Bouland,...

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    Additive Manufacturing for Ceramics Peterson, Dominic S. Los Alamos National Laboratory Los Alamos National Laboratory Materials Science(36) 3d printing 3d printing Abstract...

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  20. Los Angeles Department of Water Power LADWP | Open Energy Information

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  11. Novel Solar Energy Conversion Materials by Design of Mn(II) Oxides

    SciTech Connect (OSTI)

    Lany, S.; Peng, H.; Ndione, P.; Zakutayev, A.; Ginley, D. S.

    2013-01-01

    Solar energy conversion materials need to fulfill simultaneously a number of requirements in regard of their band-structure, optical properties, carrier transport, and doping. Despite their desirable chemical properties, e.g., for photo-electrocatalysis, transition-metal oxides usually do not have desirable semiconducting properties. Instead, oxides with open cation d-shells are typically Mott or charge-transfer insulators with notoriously poor transport properties, resulting from large effective electron/hole masses or from carrier self-trapping. Based on the notion that the electronic structure features (p-d interaction) supporting the p-type conductivity in d10 oxides like Cu2O and CuAlO2 occurs in a similar fashion also in the d5 (high-spin) oxides, we recently studied theoretically the band-structure and transport properties of the prototypical binary d5 oxides MnO and Fe2O3 [PRB 85, 201202(R)]. We found that MnO tends to self-trap holes by forming Mn+III, whereas Fe2O3 self-traps electrons by forming Fe+II. However, the self-trapping of holes is suppressed by when Mn is tetrahedrally coordinated, which suggests specific routes to design novel solar conversion materials by considering ternary Mn(II) oxides or oxide alloys. We are presenting theory, synthesis, and initial characterization for these novel energy materials.

  12. High-Resolution Structure of the Photosynthetic Mn4Ca Catalyst from X-ray Spectroscopy

    SciTech Connect (OSTI)

    Yachandra, Vittal; Yano, Junko; Kern, Jan; Pushkar, Yulia; Sauer, Kenneth; Glatzel, Pieter; Bergmann, Uwe; Messinger, Johannes; Zouni, Athina; Yachandra, Vittal K.

    2007-08-01

    The application of high-resolution X-ray spectroscopy methods to study the photosynthetic water oxidizing complex, which contains a unique hetero-nuclear catalytic Mn4Ca cluster, are described. Issues of X-ray damage especially at the metal sites in the Mn4Ca cluster are discussed. The structure of the Mn4Ca catalyst at high-resolution which has so far eluded attempts of determination by X-ray diffraction, EXAFS and other spectroscopic techniques has been addressed using polarized EXAFS techniques applied to oriented PS II membrane preparations and PS II single crystals. A review of how the resolution of traditional EXAFS techniques can be improved, using methods such as range-extended EXAFS is presented, and the changes that occur in the structure of the cluster as it advances through the catalytic cycle are described. X-ray absorption and emission techniques (XANES and K? emission) have been used earlier to determine the oxidation states of the Mn4Ca cluster, and in this report we review the use of X-ray resonant Raman spectroscopy to understand the electronic structure of the Mn4Ca cluster as it cycles through the intermediate S-states.

  13. Elasticity and magnetocaloric effect in MnFe4Si3

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Herlitschke, Marcus; Klobes, B.; Sergueev, I.; Hering, Paul; Persson, Joerg; Hermann, Raphael P.

    2016-03-16

    The room temperature magnetocaloric material MnFe4Si3 was investigated with nuclear inelastic scattering (NIS) and resonant ultrasound spectroscopy (RUS) at different temperatures and applied magnetic fields in order to assess the infuence of the magnetic transition and the magnetocaloric effect on the lattice dynamics. The NIS data give access to phonons with energies above 3 meV, whereas RUS probes the elasticity of the material in the MHz frequency range and thus low energy, ~5 neV, phonon modes. A significant infuence of the magnetic transition on the lattice dynamics is observed only in the low energy region. Here, MnFe4Si3 and other compoundsmore » in the Mn5-xFexSi3 series were also investigated with vibrating sample magnetometry, resistivity measurements and Moessbauer spectroscopy in order to study the magnetic transitions and to complement the obtained results on the lattice dynamics.« less

  14. Electronic structural and magnetic properties of Mn{sub 5}Ge{sub 3} clusters

    SciTech Connect (OSTI)

    Yuan, H. K.; Chen, H. Kuang, A. L.; Tian, C. L.; Wang, J. Z.

    2013-11-28

    Theoretical understanding of the stability, ferromagnetism, and spin polarization of Mn{sub 5}Ge{sub 3} clusters has been performed by using the density functional theory with generalized gradient approximation for exchange and correlation. The magnetic moments and magnetic anisotropy energy (MAE) have been calculated for both bulk and clusters, and the enhanced magnetic moment as well as the enlarged MAE have been identified in clusters. The most attractive achievement is that Mn{sub 5}Ge{sub 3} clusters show a fine half-metallic character with large energy scales. The present results may have important implications for potential applications of small Mn{sub 5}Ge{sub 3} clusters as both emerging spintronics and next-generation data-storage technologies.

  15. Anomalous magnetic configuration of Mn{sub 2}NiAl ribbon and the role of hybridization in the martensitic transformation of Mn{sub 50}Ni{sub 50−x}Al{sub x} ribbons

    SciTech Connect (OSTI)

    Zhao, R. B.; Zhao, D. W.; Li, G. K.; Ma, L. E-mail: houdenglu@mail.hebtu.edu.cn; Zhen, C. M.; Hou, D. L. E-mail: houdenglu@mail.hebtu.edu.cn; Wang, W. H.; Liu, E. K.; Chen, J. L.; Wu, G. H.

    2014-12-08

    The magnetic configuration of Mn{sub 2}NiAl ribbon has been investigated. In contrast to Ni{sub 2}MnAl, the compound Mn{sub 2}NiAl with considerable disorder does exhibit ferromagnetism and, due to exchange interaction competition, both ferromagnetic and antiferromagnetic moment orientations can coexist between nearest neighbor Mn atoms. This is unexpected in Heusler alloys. Regarding the mechanism of the martensitic transformation in Mn{sub 50}Ni{sub 50−x}Al{sub x}, it is found that increasing the Al content results in an unusual change in the lattice constant, a decrease of the transformation entropy change, and enhancement of the calculated electron localization. These results indicate that the p-d covalent hybridization between Mn (or Ni) and Al atoms gradually increases at the expense of the d-d hybridization between Ni and Mn atoms. This leads to an increased stability of the austenite phase and a decrease of the martensitic transformation temperature. For 11 ≤ x ≤ 14, Mn{sub 50}Ni{sub 50−x}Al{sub x} ferromagnetic shape memory alloys are obtained.

  16. Publications of Los Alamos research 1980

    SciTech Connect (OSTI)

    Salazar, C.A.; Willis, J.K.

    1981-09-01

    This bibliography is a compilation of unclassified publications of work done at the Los Alamos National Laboratory for 1980. Papers published in 1980 are included regardless of when they were actually written. Publications received too late for inclusion in earlier compilations have also been listed. Declassification of previously classified reports is considered to constitute publication. All classified issuances are omitted-even those papers, themselves unclassified, which were published only as part of a classified document. If a paper was pubished more than once, all places of publication are included. The bibliography includes Los Alamos National Laboratory reports, papers released as non-laboratory reports, journal articles, books, chapters of books, conference papers published either separately or as part of conference proceedings issued as books or reports, papers published in congressional hearings, theses, and US patents. Publications by Los Alamos authors that are not records of Laboratory-sponsored work are included when the Library becomes aware of them.

  17. Publications of Los Alamos Research, 1983

    SciTech Connect (OSTI)

    Sheridan, C.J.; McClary, W.J.; Rich, J.A.; Rodriguez, L.L.

    1984-10-01

    This bibliography is a compilation of unclassified publications of work done at the Los Alamos National Laboratory for 1983. Papers published in 1982 are included regardless of when they were actually written. Publications received too late for inclusion in earlier compilations have also been listed. Declassification of previously classified reports is considered to constitute publication. All classified issuances are omitted - even those papers, themselves unclassified, which were published only as part of a classified document. If a paper was published more than once, all places of publication are included. The bibliography includes Los Alamos National Laboratory reports, papers released as non-Laboratory reports, journal articles, books, chapters of books, conference papers either published separately or as part of conference proceedings issued as books or reports, papers publishd in congressional hearings, theses, and US patents. Publications by Los Alamos authors that are not records of Laboratory-sponsored work are included when the Library becomes aware of them.

  18. Microsoft Word - Los Alamos Dec 13.doc

    National Nuclear Security Administration (NNSA)

    3, 2005 10 4:00 P.M. Fuller Lodge 11 2132 Central Avenue Los Alamos, New Mexico 87544 12 13 14 15 16 FACILITATED BY: MARGO COVINGTON 17 18 19 20 REPORTED BY: Betty J. Lanphere, NM CCR #70 21 Betty J. Lanphere & Associates, Inc. Post Office Box 449 22 Santa Fe, New Mexico 87504 23 24 25 Betty J. Lanphere & Associates, Inc. P. O. Box 449 Santa Fe, New Mexico 87504 - (505) 983-7367 1 2 A P P E A R A N C E S 3 FOR DEPARTMENT OF ENERGY: 4 Lisa Cummings EIS Document Manager 5 U.S. DOE NNSA Los

  19. Enhanced performance of branched TiO{sub 2} nanorod based Mn-doped CdS and Mn-doped CdSe quantum dot-sensitized solar cell

    SciTech Connect (OSTI)

    Kim, Soo-Kyoung; Gopi, Chandu V. V. M.; Lee, Jae-Cheol; Kim, Hee-Je

    2015-04-28

    TiO{sub 2} branched nanostructures could be efficient as photoanodes for quantum dot-sensitized solar cells (QDSCs) due to their large surface area for QD deposition. In this study, Mn-doped CdS/Mn-doped CdSe deposited branched TiO{sub 2} nanorods were fabricated to enhance the photovoltaic performance of QDSCs. Mn doping in CdS and CdSe retards the recombination losses of electrons, while branched TiO{sub 2} nanorods facilitate effective electron transport and compensate for the low surface area of the nanorod structure. As a result, the charge-transfer resistance (R{sub CT}), electron lifetime (?{sub e}), and the amount of QD deposition were significantly improved with branched TiO{sub 2} nanorod based Mn-doped CdS/Mn-doped CdSe quantum dot-sensitized solar cell.

  20. Structural transformations in Mn{sub 2}NiGa due to residual stress

    SciTech Connect (OSTI)

    Singh, Sanjay; Maniraj, M.; D'Souza, S. W.; Barman, S. R.; Ranjan, R.

    2010-02-22

    Powder x-ray diffraction study of Mn{sub 2}NiGa ferromagnetic shape memory alloy shows the existence of a 7M monoclinic modulated structure at room temperature (RT). The structure of Mn{sub 2}NiGa is found to be highly dependent on residual stress. For higher stress, the structure is tetragonal at RT, and for intermediate stress it is 7M monoclinic. However, only when the stress is considerably relaxed, the structure is cubic, as is expected at RT since the martensitic transition temperature is 230 K.

  1. MnO spin-wave dispersion curves from neutron powder diffraction

    SciTech Connect (OSTI)

    Goodwin, Andrew L.; Dove, Martin T.; Tucker, Matthew G.; Keen, David A.

    2007-02-15

    We describe a model-independent approach for the extraction of spin-wave dispersion curves from powder neutron total scattering data. Our approach is based on a statistical analysis of real-space spin configurations to calculate spin-dynamical quantities. The RMCPROFILE implementation of the reverse Monte Carlo refinement process is used to generate a large ensemble of supercell spin configurations from MnO powder diffraction data collected at 100 K. Our analysis of these configurations gives spin-wave dispersion curves for MnO that agree well with those determined independently using neutron triple-axis spectroscopic techniques.

  2. In operando X-ray studies of the conversion reaction in Mn3O4 lithium

    Office of Scientific and Technical Information (OSTI)

    battery anodes (Journal Article) | SciTech Connect operando X-ray studies of the conversion reaction in Mn3O4 lithium battery anodes Citation Details In-Document Search Title: In operando X-ray studies of the conversion reaction in Mn3O4 lithium battery anodes Authors: Lowe, Michael A. ; Gao, Jie ; Abruña, Héctor D. Publication Date: 2013-01-01 OSTI Identifier: 1080663 DOE Contract Number: SC0001086 Resource Type: Journal Article Resource Relation: Journal Name: J. Mater. Chem. A; Journal

  3. Magnetoelectric coupling tuned by competing anisotropies in Mn 1 - x Ni x

    Office of Scientific and Technical Information (OSTI)

    TiO 3 (Journal Article) | DOE PAGES Magnetoelectric coupling tuned by competing anisotropies in Mn 1 - x Ni x TiO 3 « Prev Next » Title: Magnetoelectric coupling tuned by competing anisotropies in Mn 1 - x Ni x TiO 3 Authors: Chi, Songxue ; Ye, Feng ; Zhou, H. D. ; Choi, E. S. ; Hwang, J. ; Cao, Huibo ; Fernandez-Baca, Jaime A. Publication Date: 2014-10-24 OSTI Identifier: 1181043 Type: Publisher's Accepted Manuscript Journal Name: Physical Review B Additional Journal Information: Journal

  4. Unoccupied electronic structure of Ni2MnGa ferromagnetic shape memory alloy

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Maniraj, M.; D׳Souza, S. W.; Rai, Abhishek; Schlagel, D. L.; Lograsso, T. A.; Iowa State Univ., Ames, IA; Chakrabarti, Aparna; Barman, S. R.

    2015-08-20

    Momentum resolved inverse photoemission spectroscopy measurements show that the dispersion of the unoccupied bands of Ni2MnGa is significant in the austenite phase. Furthermore, in the martensite phase, it is markedly reduced, which is possibly related to the structural transition to an incommensurate modulated state in the martensite phase. Finally, based on the first principle calculations of the electronic structure of Ni–Mn–Ga, we show that the modification of the spectral shape with surface composition is related to change in the hybridization between the Mn 3d and Ni 3d-like states that dominate the unoccupied conduction band.

  5. Graphene in proximity to magnetic insulating LaMnO{sub 3}

    SciTech Connect (OSTI)

    Cheng, Guanghui; Wei, Laiming, E-mail: laiming@ustc.edu.cn, E-mail: cgzeng@ustc.edu.cn; Cheng, Long; Liang, Haixing; Zhang, Xiaoqiang; Li, Hui [Hefei National Laboratory for Physical Sciences at the Microscale (HFNL) and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China); Yu, Guolin [Shanghai Institute of Technical Physics, Chinese Academy of Science, Shanghai 200083 (China); Zeng, Changgan, E-mail: laiming@ustc.edu.cn, E-mail: cgzeng@ustc.edu.cn [Hefei National Laboratory for Physical Sciences at the Microscale (HFNL) and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China); International Center for Quantum Design of Functional Materials (ICQD), HFNL, University of Science and Technology of China, Hefei, Anhui 230026 (China); Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)

    2014-09-29

    Proximity to functional substrates may enhance the coupling between the quantum degrees of freedom and thus develop nontrivial quantum effects in graphene. Here, we demonstrate the successful fabrication of graphene in proximity to atomically flat magnetic insulating LaMnO{sub 3} films. The insulating nature of the LaMnO{sub 3} films not only ensures the electronic transport only occur in the graphene layers but also allow them to serve as dielectric layers for gating. Transport measurements reveal anomalous behaviors, including asymmetrical longitudinal magnetoresistivity and nonlinear Hall effect. This work may pave a way toward the realization of intriguing quantum phases in graphene.

  6. Dy-Mn-Si as a representative of family of 'Dy-Transition

    Office of Scientific and Technical Information (OSTI)

    Metal-Si' systems: Its isothermal sections, empirical rProd. Type: FTPules and new rare-earth manganese silicides (Journal Article) | SciTech Connect Dy-Mn-Si as a representative of family of 'Dy-Transition Metal-Si' systems: Its isothermal sections, empirical rProd. Type: FTPules and new rare-earth manganese silicides Citation Details In-Document Search Title: Dy-Mn-Si as a representative of family of 'Dy-Transition Metal-Si' systems: Its isothermal sections, empirical rProd. Type: FTPules

  7. Magnetically nanostructured state in a Ni-Mn-Sn shape-memory alloy (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect Magnetically nanostructured state in a Ni-Mn-Sn shape-memory alloy Citation Details In-Document Search This content will become publicly available on June 15, 2016 Title: Magnetically nanostructured state in a Ni-Mn-Sn shape-memory alloy Authors: Yuan, S. ; Kuhns, P. L. ; Reyes, A. P. ; Brooks, J. S. ; Hoch, M. J. R. ; Srivastava, V. ; James, R. D. ; El-Khatib, S. ; Leighton, C. Publication Date: 2015-06-16 OSTI Identifier: 1184888 Grant/Contract Number:

  8. Multiscale twin hierarchy in NiMnGa shape memory alloys with Fe and Cu

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Journal Article: Multiscale twin hierarchy in NiMnGa shape memory alloys with Fe and Cu Citation Details In-Document Search Title: Multiscale twin hierarchy in NiMnGa shape memory alloys with Fe and Cu Authors: Barabash, Rozaliya I. ; Barabash, Oleg M. ; Popov, Dmitry ; Shen, Guoyin ; Park, Changyong ; Yang, Wenge [1] ; ORNL) [2] ; CIW) [2] ; CHPSTAR- China) [2] + Show Author Affiliations (Tennessee-K) ( Publication Date: 2015-04-01 OSTI Identifier:

  9. Coexistence of charge-density wave and ferromagnetism in Ni2MnGa (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | DOE PAGES DOE PAGES Search Results Publisher's Accepted Manuscript: Coexistence of charge-density wave and ferromagnetism in Ni2MnGa « Prev Next » Title: Coexistence of charge-density wave and ferromagnetism in Ni2MnGa Authors: D'Souza, S. W. ; Rai, Abhishek ; Nayak, J. ; Maniraj, M. ; Dhaka, R. S. ; Barman, S. R. ; Schlagel, D. L. ; Lograsso, T. A. ; Chakrabarti, Aparna Publication Date: 2012-02-23 OSTI Identifier: 1099244 Type: Publisher's Accepted Manuscript Journal Name:

  10. Coexistence of charge-density wave and ferromagnetism in Ni2MnGa (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect Coexistence of charge-density wave and ferromagnetism in Ni2MnGa Citation Details In-Document Search Title: Coexistence of charge-density wave and ferromagnetism in Ni2MnGa Authors: D'Souza, S. W. ; Rai, Abhishek ; Nayak, J. ; Maniraj, M. ; Dhaka, R. S. ; Barman, S. R. ; Schlagel, D. L. ; Lograsso, T. A. ; Chakrabarti, Aparna Publication Date: 2012-02-23 OSTI Identifier: 1099244 Type: Publisher's Accepted Manuscript Journal Name: Physical Review. B. Condensed

  11. Modeling and Characterization of the Magnetocaloric Effect in Ni2MnGa Materials

    SciTech Connect (OSTI)

    Nicholson, Don M; Odbadrakh, Khorgolkhuu; Shassere, Benjamin; Rios, Orlando; Hodges, Jason P; Ludtka, Gerard Michael; Porter, Wallace D; Safa-Sefat, Athena; Rusanu, Aurelian; Brown, Greg; Evans III, Boyd Mccutchen

    2014-01-01

    Magnetic shape memory alloys have great promise as magneto-caloric effect refrigerant materials due to their combined magnetic and structural transitions. Computational and experimental research is reported on the Ni2MnGa material system. The magnetic states of this system are explored using the Wang-Landau statistical approach in conjunction with the Locally Self-consistent Multiple-Scattering method. The effects of alloying agents on the transition temperatures of the Ni2MnGa alloy are investigated using differential scanning calorimetry and superconducting quantum interference device. Experiments are performed at the Spallation Neutron Source at Oak Ridge National Laboratory to observe the structural and magnetic phase transformations.

  12. Study of structural and electronic properties of Mn{sub 3}O{sub 4}

    SciTech Connect (OSTI)

    Kaur, Ramandeep Maitra, Tulika Nautiyal, Tashi

    2014-04-24

    Using density functional theory calculations we have examined the structural and electronic properties of magnetic spinel Mn{sub 3}O{sub 4}. We have optimized the structure (both volume and c/a ratio) within GGA. Then Coulomb correlations are included in the calculations to study the electronic properties. We observe that both the band gap and magnetic moment increase with the increase in Coulomb correlation due to the increased Jahn-Teller splitting and localization of the single e{sub g} electron of Mn{sup 3+}.

  13. Perpendicularly magnetized {tau}-MnAl (001) thin films epitaxied on GaAs

    SciTech Connect (OSTI)

    Nie, S. H.; Zhu, L. J.; Lu, J.; Pan, D.; Wang, H. L.; Yu, X. Z.; Xiao, J. X.; Zhao, J. H.

    2013-04-15

    Perpendicularly magnetized {tau}-MnAl films have been epitaxied on GaAs (001) by molecular-beam epitaxy. Crystalline quality and magnetic properties of the samples were strongly dependent on growth temperature. The highest coercivity of 10.7 kOe, saturation magnetization of 361.4 emu/cm{sup 3}, perpendicular magnetic anisotropy constant of 13.65 Merg/cm{sup 3}, and magnetic energy product of 4.44 MGOe were achieved. These tunable magnetic properties make MnAl films valuable as excellent and cost-effective alternative for not only high density perpendicular magnetic recording storage and spintronics devices but also permanent magnets.

  14. Magnetically nanostructured state in a Ni-Mn-Sn shape-memory alloy (Journal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Article) | DOE PAGES Publisher's Accepted Manuscript: Magnetically nanostructured state in a Ni-Mn-Sn shape-memory alloy This content will become publicly available on June 15, 2016 Title: Magnetically nanostructured state in a Ni-Mn-Sn shape-memory alloy Authors: Yuan, S. ; Kuhns, P. L. ; Reyes, A. P. ; Brooks, J. S. ; Hoch, M. J. R. ; Srivastava, V. ; James, R. D. ; El-Khatib, S. ; Leighton, C. Publication Date: 2015-06-16 OSTI Identifier: 1184888 Grant/Contract Number: FG02-06ER46275

  15. X-Ray Spectroscopy of the Mn(4) Ca Cluster in the Water-Oxidation Complex

    Office of Scientific and Technical Information (OSTI)

    of Photosystem II (Journal Article) | SciTech Connect X-Ray Spectroscopy of the Mn(4) Ca Cluster in the Water-Oxidation Complex of Photosystem II Citation Details In-Document Search Title: X-Ray Spectroscopy of the Mn(4) Ca Cluster in the Water-Oxidation Complex of Photosystem II No abstract prepared. Authors: Sauer, K. ; Yano, J. ; Yachandra, V.K. ; /UC, Berkeley /LBL, Berkeley Publication Date: 2007-08-08 OSTI Identifier: 912555 Report Number(s): SLAC-REPRINT-2005-323 TRN: US200801%%922

  16. Enlarged Mn 3s splitting and room-temperature ferromagnetism in epitaxially grown oxygen doped Mn{sub 2}N{sub 0.86} films

    SciTech Connect (OSTI)

    Meng, M.; Wu, S. X. Ren, L. Z.; Zhou, W. Q.; Wang, Y. J.; Wang, G. L.; Li, S. W.

    2014-11-07

    Single-phase and oxygen doped Mn{sub 2}N{sub 0.86} thin films have been grown on MgO (111) by plasma-assisted molecular beam epitaxy. The films grow under tensile strain and, remarkably, they show ferromagnetic-like interactions at low temperature and ferromagnetic ordering agreed well with the Bloch-law T{sup 3/2} at room-temperature. We further demonstrate the enlarged Mn 3s splitting (6.46 eV) and its possible relation to the observed ferromagnetism. Our study not only provide a strategy for further theoretical work on oxygen doped manganese nitrides, but also shed promising light on utilizing its room-temperature FM property to fabricate spintronic devices.

  17. Synthesis of MnO{sub 2}-graphene composites with enhanced supercapacitive performance via pulse electrodeposition under supergravity field

    SciTech Connect (OSTI)

    Liu, Tingting; Shao, Guangjie; Ji, Mingtong; Wang, Guiling

    2014-07-01

    A method of pulse electrodeposition under supergravity field was proposed to synthesize MnO{sub 2}-graphene composites. Supergravity is very efficient for promoting mass transfer and decreasing concentration polarization during the electrodeposition process. The synthesis was conducted on our homemade supergravity equipment. The strength of supergravity field depended on the rotating speed of the ring electrode. 3D flower like MnO{sub 2} spheres composed of nanoflakes were acquired when the rotating speed was 3000 rpm. Graphene nanosheets play as a role of conductive substrates for MnO{sub 2} growing. The composites are evaluated as electrode materials for supercapacitors. Electrochemical results show that the maximum specific capacitance of the MnO{sub 2}-graphene composite is 595.7 F g{sup ?1} at a current density of 0.5 A g{sup ?1}. In addition, the composite exhibits excellent cycle stability with no capacitance attenuation after 1000 cycles. The approach provides new ideas for developing supercapacitor electrode materials with high performance. - Graphical abstract: 3D flower like MnO{sub 2} spheres composed of nanoflakes were acquired at 3000 rpm. - Highlights: MnO{sub 2}-graphene composites were prepared by pulse electrodeposition under supergravity. 3D flower like MnO{sub 2} spheres are anchored on the graphene nanosheets. The MnO{sub 2}-graphene electrode exhibits a specific capacitance of 595.7 F g{sup ?1}.

  18. Enterprise Assessments Review, Los Alamos National Laboratory- November 2014

    Broader source: Energy.gov [DOE]

    Review of the Los Alamos National Laboratory Weapons Engineering Tritium Facility Fire Suppression System

  19. Enforcement Letter, Los Alamos National Security, LLC- February 16, 2007

    Broader source: Energy.gov [DOE]

    Issued to the University of California related to Operational Performance at the Los Alamos National Laboratory

  20. Preliminary Notice of Violation, Los Alamos National Security, LLC

    Broader source: Energy.gov [DOE]

    Worker Safety and Health Enforcement Preliminary Notice of Violation issued to Los Alamos National Security, LLC

  1. FPD's Perspective Photos - Los Alamos National Labratory - NISA |

    Office of Environmental Management (EM)

    Department of Energy Photos - Los Alamos National Labratory - NISA FPD's Perspective Photos - Los Alamos National Labratory - NISA 2014 DOE Project Management Workshop PDF icon 30_FPD Perspective_Photos.pdf More Documents & Publications FPD's Perspective Talking Points - Los Alamos National Labratory - NISA Enforcement Letter, Los Alamos National Security, LLC - May 15, 2008 Chromium Groundwater Remediation Campaign

  2. FPD's Perspective Talking Points - Los Alamos National Labratory - NISA |

    Office of Environmental Management (EM)

    Department of Energy Talking Points - Los Alamos National Labratory - NISA FPD's Perspective Talking Points - Los Alamos National Labratory - NISA 2014 DOE Project Management Workshop PDF icon 30_FPD Perspective_Talking Points.pdf More Documents & Publications FPD's Perspective Photos - Los Alamos National Labratory - NISA Aligning Contract Incentives 2012 Annual Workforce Analysis and Staffing Plan Report - Los Alamos Field Office

  3. Effect of Cu{sup 2+} and Ni{sup 2+} substitution at the Mn site in (La{sub

    Office of Scientific and Technical Information (OSTI)

    0.63}Ca{sub 0.37})MnO{sub 3}: A neutron powder diffraction investigation (Journal Article) | SciTech Connect Effect of Cu{sup 2+} and Ni{sup 2+} substitution at the Mn site in (La{sub 0.63}Ca{sub 0.37})MnO{sub 3}: A neutron powder diffraction investigation Citation Details In-Document Search Title: Effect of Cu{sup 2+} and Ni{sup 2+} substitution at the Mn site in (La{sub 0.63}Ca{sub 0.37})MnO{sub 3}: A neutron powder diffraction investigation The crystal and magnetic structures of the

  4. Observation of Precipitation Evolution in Fe-Ni-Mn-Ti-Al Maraging Steel using Atom Probe Tomography

    SciTech Connect (OSTI)

    Pereloma, E. V.; Stohr, R A; Miller, Michael K; Ringer, S. P.

    2009-01-01

    We describe the full decomposition sequence in an Fe-Ni-Mn-Ti-Al maraging steel during isothermal annealing at 550 C. Following significant pre-precipitation clustering reactions within the supersaturated martensitic solid solution, (Ni,Fe){sub 3}Ti and (Ni,Fe){sub 3}(Al,Mn) precipitates eventually form after isothermal aging for {approx}60 seconds. The morphology of the (Ni,Fe){sub 3}Ti particles changes gradually during aging from predominantly plate-like to rod-like, and, importantly, Mn and Al were observed to segregate to these precipitate/matrix interfaces. The (Ni,Fe){sub 3}(Al,Mn) precipitates occurred at two main locations: uniformly within the matrix and at the periphery of the (Ni,Fe){sub 3}Ti particles. We relate this latter mode of precipitation to the Mn-Al segregation.

  5. Growth of single-crystal {alpha}-MnO{sub 2} nanorods on multi-walled carbon nanotubes

    SciTech Connect (OSTI)

    Chen Yong; Liu Chenguang; Liu Chang; Lu Gaoqing; Cheng Huiming

    2007-11-06

    Single-crystal {alpha}-MnO{sub 2} nanorods were grown on multi-walled carbon nanotubes (MWNTs) in H{sub 2}SO{sub 4} aqueous solution. The morphology and microstructure of the composites were examined by transmission electron microscopy, high-resolution transmission electron microscopy (HRTEM), X-ray diffractometry and energy dispersive spectroscopy (EDS). The results show that {alpha}-MnO{sub 2} single-crystal nanorods with a mean diameter of 15 nm were densely grown on the surface of MWNTs. Those MWNTs/MnO{sub 2} composites were used as an electrode material for supercapacitors, and it was found that the supercapacitor performance using MWNTs/MnO{sub 2} composites was improved largely compared to that using pure MWNTs and {alpha}-MnO{sub 2} nanorod mechanically mixed with MWNTs.

  6. Seventy-three New Mexico students receive Los Alamos Employees'

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    April 24, 2013 Scholarship campaign begins May 1 for 2014 scholarship awards LOS ALAMOS, New Mexico, April 24, 2013-Seventy-three students from seven Northern New Mexico counties were announced this week as recipients of this year's scholarships through the Los Alamos Employees' Scholarship Fund. Funding for the scholarships comes from $411,500 in donations from Los Alamos National Laboratory employees and Los Alamos National Security, LLC. - 2 - Los Alamos High School senior Kevin Gao, Micaela

  7. Los Alamos National Security Corrective Action Plan - Radiological Release

    Energy Savers [EERE]

    Phase II | Department of Energy Los Alamos National Security Corrective Action Plan - Radiological Release Phase II Los Alamos National Security Corrective Action Plan - Radiological Release Phase II Los Alamos National Security Corrective Action Plan - Radiological Release Phase II PDF icon Los Alamos National Security Corrective Action Plan - Radiological Release Phase II More Documents & Publications Environmental Management Los Alamos Field Office Corrective Action Plan -

  8. Enforcement Letter, Los Alamos National Security, LLC | Department of

    Energy Savers [EERE]

    Energy Los Alamos National Security, LLC Enforcement Letter, Los Alamos National Security, LLC September 18, 2015 Security Enforcement Letter issued to Los Alamos National Security, LLC On September 18, 2015, the U.S. Department of Energy (DOE) Office of Enterprise Assessments' Office of Enforcement issued an Enforcement Letter (SEL-2015-02) to Los Alamos National Security, LLC relating to the unauthorized disclosure of classified information at the Los Alamos National Laboratory. PDF icon

  9. Internship Opportunities for Los Alamos Employees' Scholarship Fund

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Recipients Internship Opportunities for Los Alamos Employees' Scholarship Fund Recipients Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue:Mar. 2016 all issues All Issues » submit Internship Opportunities for Los Alamos Employees' Scholarship Fund Recipients A personal message from Richard Marquez, Executive Director, Los Alamos National Laboratory June 1, 2014 Richard Marquez, Executive Director, Los Alamos National Laboratory

  10. Los Alamos National Laboratory | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Locations / Los Alamos National Laboratory Los Alamos National Laboratory NNSA's Los Alamos National Laboratory (LANL) is a design laboratory responsible for the safety and reliability of the nuclear explosives package in nuclear weapons. This lab possesses unique capabilities in neutron scattering, enhanced surveillance, radiography, and plutonium science and engineering. LANL is contractor-run by Los Alamos National Security, LLC, and located in Los Alamos, NM. Visit our website Caption1

  11. Preliminary Notice of Violation, Los Alamos National Security, LLC |

    Energy Savers [EERE]

    Department of Energy Los Alamos National Security, LLC Preliminary Notice of Violation, Los Alamos National Security, LLC February 18, 2016 Nuclear Safety Enforcement Preliminary Notice of Violation issued to Los Alamos National Security, LLC relating to the packaging and remediation of transuranic waste drums at the Los Alamos National Laboratory On February 18, 2016, the National Nuclear Security Administration issued a Preliminary Notice of Violation (NEA-2016-01) to Los Alamos National

  12. Preliminary Notice of Violation, Los Alamos National Laboratory -

    Energy Savers [EERE]

    EA-2007-01 | Department of Energy Los Alamos National Laboratory - EA-2007-01 Preliminary Notice of Violation, Los Alamos National Laboratory - EA-2007-01 July 13, 2007 Issued to Los Alamos National Security, LLC related to the Unauthorized Reproduction and Removal of Classified Matter from the Los Alamos National Laboratory On July 13, 2007, the National Nuclear Security Administration issued a Preliminary Notice of Violation (EA-2007-01) to Los Alamos National Security, LLC in accordance

  13. Enforcement Letter, Los Alamos National Security, LLC - May 15, 2008 |

    Office of Environmental Management (EM)

    Department of Energy May 15, 2008 Enforcement Letter, Los Alamos National Security, LLC - May 15, 2008 May 15, 2008 Issued to Los Alamos National Security, LLC related to the Protection of Classified Information at the Los Alamos National Laboratory On May 15, 2008, the U.S. Department of Energy issued an Enforcement Letter to Los Alamos National Security, LLC expressing concerns about the protection of classified information at the Los Alamos National Laboratory. PDF icon Enforcement

  14. Independent Oversight Review, Los Alamos National Laboratory - November

    Office of Environmental Management (EM)

    2013 | Department of Energy November 2013 Independent Oversight Review, Los Alamos National Laboratory - November 2013 November 2013 Review of the Los Alamos National Laboratory Radiological Controls Activity-Level Implementation This report documents the results of an independent oversight review of radiological protection program activity-level implementation performed by Los Alamos National Security and its subcontractors at Los Alamos National Laboratory, Los Alamos Neutron Science

  15. Bulk and surface half-metallicity: The case of D0{sub 3}-type Mn{sub 3}Ge

    SciTech Connect (OSTI)

    Liu, Hao; Gao, G. Y. Hu, Lei; Ni, Yun; Zu, Fengxia; Zhu, Sicong; Wang, Shuling; Yao, K. L.

    2014-01-21

    Motivated by the experimental realization of D0{sub 22}-type Mn{sub 3}Ge (001) films [Kurt et al. Appl. Phys. Lett. 101, 132410 (2012)] and the structural stability of D0{sub 3}-type Heusler alloy Mn{sub 3}Ge [Zhang et al. J. Phys.: Condens. Matter 25, 206006 (2013)], we use the first-principles calculations based on the full potential linearized augmented plane-wave method to investigate the electronic and magnetic properties of D0{sub 3}-type Heusler alloy Mn{sub 3}Ge and its (001) surface. We show that bulk D0{sub 3}-Mn{sub 3}Ge is a half-metallic ferromagnet with the minority-spin energy gap of 0.52 eV and the magnetic moment of 1.00 μ{sub B} per formula unit. The bulk half-metallicity is preserved at the pure Mn-terminated (001) surface due to the large exchange split, but the MnGe-terminated (001) surface destroys the bulk half-metallicity. We also reveal that the surface stabilities are comparable between the D0{sub 3}-Mn{sub 3}Ge (001) and the experimental D0{sub 22}-Mn{sub 3}Ge (001), which indicates the feasibility to grow the Mn{sub 3}Ge (001) films with D0{sub 3} phase other than D0{sub 22} one. The surface half-metallicity and stability make D0{sub 3}-Mn{sub 3}Ge a promising candidate for spintronic applications.

  16. Los Alamos National Security, LLC partners with Los Alamos National Bank on

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Las Conchas recovery challenge fund Las Conchas recovery challenge fund Los Alamos National Security, LLC partners with Los Alamos National Bank on Las Conchas recovery challenge fund LANS has given $50,000 as seed money to establish a fund at LANB. July 28, 2011 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to

  17. LOS ALAMOS, N.M., Nov. 3, 2015-Nina Lanza, of Los Alamos National Laboratory's

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Hunting for meteorites in Antarctica November 13, 2015 Los Alamos scientist part of NASA's select few LOS ALAMOS, N.M., Nov. 3, 2015-Nina Lanza, of Los Alamos National Laboratory's Space and Remote Sensing group, was selected as one of eight members for the 2015-2016 field campaign of the Antarctica Search for Meteorites (ANSMET) program, which is supported by NASA. "These meteorites can help us understand the formation and evolution of our solar system," said Lanza. "They come

  18. LOS ALAMOS, N.M., Oct. 31, 2013-Los Alamos National Laboratory scientist

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Matter, antimatter and surviving the big bang is topic of Lab's next Frontiers in Science lecture October 31, 2013 Talk begins at 7 p.m. and open to public LOS ALAMOS, N.M., Oct. 31, 2013-Los Alamos National Laboratory scientist Vincenzo Cirigliano asks the question, How did we survive the big bang? in a series of Frontiers in Science lectures beginning Monday, Nov. 4, in the Duane Smith Auditorium at Los Alamos High School. "Particles and antiparticles were produced in equal numbers in the

  19. LOS ALAMOS, N.M., Sept. 17, 2015-Scientists at Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    insights into HIV-1 vaccine design September 17, 2015 Los Alamos researchers model alternate ideas for an HIV vaccine LOS ALAMOS, N.M., Sept. 17, 2015-Scientists at Los Alamos National Laboratory have created a computational model that could change the way that researchers look at possibilities for an HIV-1 vaccine. "An effective HIV-1 vaccine has proven elusive, partly due to the difficulty of causing an immune response that can neutralize the diverse viral strains circulating in the human

  20. LOS ALAMOS, New Mexico, August 20, 2010-Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    sets new record for waste shipments August 20, 2010 Each shipment moves LANL closer to cleanup LOS ALAMOS, New Mexico, August 20, 2010-Los Alamos National Laboratory set a new LANL record on Friday by completing its 132nd transuranic (TRU) waste shipment of fiscal year 2010 to the Waste Isolation Pilot Plant (WIPP) near Carlsbad, New Mexico. The shipment eclipsed last year's record total of 131 shipments, with five weeks still remaining in fiscal year 2010. "Removing this waste from Los

  1. Modulation on Ni{sub 2}MnGa(001) surface

    SciTech Connect (OSTI)

    D'Souza, S. W.; Rai, Abhishek; Nayak, J.; Maniraj, M.; Dhaka, R. S.; Barman, S. R.; Schlagel, D. L.; Lograsso, T. A.

    2011-07-15

    We report periodic modulation on (001) surface of Ni2MnGa ferromagnetic shape memory alloy. For the stoichiometric surface, analysis of the low energy electron diffraction (LEED) spot profiles shows that the modulation is incommensurate. The modulation appears at 200 K, concomitant with the first order structural transition to the martensitic phase.

  2. Short- and long-range magnetic order in LaMnAsO

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    McGuire, Michael A.; Garlea, Vasile Ovidiu

    2016-02-02

    The magnetic properties of the layered oxypnictide LaMnAsO have been revisited using neutron scattering and magnetization measurements. The present measurements identify the Néel temperature T N =360(1) K. Below T N the critical exponent describing the magnetic order parameter is β=0.33–0.35 , consistent with a three-dimensional Heisenberg model. Above this temperature, diffuse magnetic scattering indicative of short-range magnetic order is observed, and this scattering persists up to T SRO =650(10) K. Morevoer, the magnetic susceptibility shows a weak anomaly at T SRO and no anomaly at T N . Analysis of the diffuse scattering data using a reverse Monte Carlomore » algorithm indicates that above T N nearly two-dimensional, short-range magnetic order is present with a correlation length of 9.3(3) Å within the Mn layers at 400 K. The inelastic scattering data reveal a spin gap of 3.5 meV in the long-range ordered state, and strong, low-energy (quasielastic) magnetic excitations emerging in the short-range ordered state. When we compared it with other related compounds correlates the distortion of the Mn coordination tetrahedra to the sign of the magnetic exchange along the layer-stacking direction, and suggests that short-range order above T N is a common feature in the magnetic behavior of layered Mn-based pnictides and oxypnictides.« less

  3. Aliovalent titanium substitution in layered mixed Li Ni-Mn-Co oxides for lithium battery applications

    SciTech Connect (OSTI)

    Kam, Kinson; Doeff, Marca M.

    2010-12-01

    Improved electrochemical characteristics are observed for Li[Ni1/3Co1/3-yMyMn1/3]O2 cathode materials when M=Ti and y<0.07, compared to the baseline material, with up to 15percent increased discharge capacity.

  4. Ordering ferromagnetic In{sub 1?x}Mn{sub x}As quantum dots

    SciTech Connect (OSTI)

    Ferri, Fabio A.; Marega Jr, Euclydes; Kunets, Vasyl P.; Salamo, Gregory J.

    2013-12-04

    In this work, we present a method to order low temperature (LT) self-assembled ferromagnetic In{sub 1?x}Mn{sub x}As quantum dots (QDs) grown by molecular beam epitaxy (MBE). The ordered In{sub 1?x}Mn{sub x}As QDs were grown on top of a non-magnetic In{sub 0.4}Ga{sub 0.6}As/GaAs(100) QDs multi-layered structure. The modulation of the chemical potential, due to the stacking, provides a nucleation center for the LT In{sub 1?x}Mn{sub x}As QDs. For particular conditions, such as surface morphology and growth conditions, the In{sub 1?x}Mn{sub x}As QDs align along lines like chains. For comparison purposes, we also report the study of QDs grown on plain GaAs(100) substrates. Ferromagnetic behavior was observed for all structures at 2 K.

  5. Evaluation of Li2MnSiO4 Cathode | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    11 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation PDF icon es018_belharouak_2011_p.pdf More Documents & Publications Search for High Energy Density Cathode Materials Evaluation of Li2MnSiO4 Cathode Design of Safer High-Energy Density Materials for Lithium-Ion Cells

  6. Evaluation of Li2MnSiO4 Cathode | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    09 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. PDF icon esp_18_belharouak.pdf More Documents & Publications Search for High Energy Density Cathode Materials Evaluation of Li2MnSiO4 Cathode Vehicle Technologies Office Merit Review 2014: High-Capacity Polyanion Cathodes

  7. CaMn2Sb2: Spin waves on a frustrated antiferromagnetic honeycomb lattice

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    McNally, D. E.; Simonson, J. W.; Kistner-Morris, J. J.; Smith, G. J.; Hassinger, J. E.; DeBeer-Schmidt, L.; Kolesnikov, A. I.; Zaliznyak, I.; Aronson, M. C.

    2015-05-22

    We present inelastic neutron scattering measurements of the antiferromagnetic insulator CaMn2Sb2:, which consists of corrugated honeycomb layers of Mn. The dispersion of magnetic excitations has been measured along the H and L directions in reciprocal space, with a maximum excitation energy of ≈ 24 meV. These excitations are well described by spin waves in a Heisenberg model, including first and second neighbor exchange interactions, J1 and J2, in the Mn plane and also an exchange interaction between planes. The determined ratio J2/J1 ≈ 1/6 suggests that CaMn2Sb2: is the first example of a compound that lies very close to themore »mean field tricritical point, known for the classical Heisenberg model on the honeycomb lattice, where the N´eel phase and two different spiral phases coexist. The magnitude of the determined exchange interactions reveal a mean field ordering temperature ≈ 4 times larger than the reported N´eel temperature TN = 85 K, suggesting significant frustration arising from proximity to the tricritical point.« less

  8. LOS ALAMOS, New Mexico, March 23, 2012-Los Alamos National Laboratory...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    to return to work. Any suspected illegal activity will be reported to the Los Alamos Police Department. "We're doing our best to meet our security objectives while minimizing...

  9. LOS ALAMOS, NEW MEXICO, August 22, 2012-Nathan Moody of Los Alamos

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Moody of Los Alamos National Laboratory is among 78 of the nation's brightest young engineers selected for the National Academy of Engineering's (NAE) 18th annual U.S....

  10. of Las Conchas Fire LOS ALAMOS, New Mexico, July 8, 2011-Los...

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    closes road, trails for safety reasons; flooding and erosion control work under way July 8, 2011 Crews assessing damage and potential runoff effects of Las Conchas Fire LOS ALAMOS,...

  11. On June 28, Los Alamos National Security, LLC and Los Alamos...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Virginia spends her days bringing joy to other residents by visiting them and making origami animals to brighten their rooms. Irene Powell, RSVP Director in Los Alamos, sums it...

  12. LOS ALAMOS, New Mexico, August 28, 2008-Physicists at Los Alamos...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and helium. "It's really a question of the chicken and the egg," said coauthor Eric Bauer of Los Alamos. "Does superconductivity need magnetism in this state, or does magnetism...

  13. EA-1247: Electrical Power System Upgrades at Los Alamos National Laboratory, Los Alamos, New Mexico

    Office of Energy Efficiency and Renewable Energy (EERE)

    This EA evaluates the environmental impacts for the proposal to upgrade the electrical power supply system for the U.S. Department of Energy Los Alamos National Laboratory to increase the...

  14. EA-1131: Relocation of Neutron Tube Target Loading Operation, Los Alamos Laboratory, Los Alamos, New Mexico

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts of the proposal to relocate the Neutron Tube Target Loading operations at the U.S. Department of Energy Los Alamos National Laboratory in New Mexico from...

  15. EIS-0018: Continued Operation of Los Alamos Scientific Laboratory Site, Los Alamos, New Mexico

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy prepared this statement to assesses the potential cumulative environmental impacts associated with current, known future, and continuing activities at the Los Alamos Scientific Laboratory site.

  16. LOS ALAMOS, N.M., Oct. 23, 2014-Los Alamos National Laboratory...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2:52 Los Alamos novel rocket design flight tested Conventional solid-fuel rocket motors work by combining a fuel and an oxidizer, a material usually rich in oxygen, to...

  17. Helical antiferromagnetic ordering in Lu1-xScxMnSi

    SciTech Connect (OSTI)

    Goetsch, Ryan J; Anand, V K; Johnston, David C

    2014-08-01

    Polycrystalline samples of Lu1?xScxMnSi (x=0, 0.25, 0.5) are studied using powder x-ray diffraction, heat capacity Cp, magnetization, magnetic susceptibility ?, and electrical resistivity ? measurements versus temperature T and magnetic field H. This system crystallizes in the primitive orthorhombic TiNiSi-type structure (space group Pnma) as previously reported. The ?(T) data indicate metallic behavior. The Cp(T), ?(T), and ?(T) measurements consistently indicate long-range antiferromagnetic (AF) transitions with AF ordering temperatures TN=246, 215, and 188 K for x=0, 0.25, and 0.5, respectively. A second transition is observed at somewhat lower T for each sample from the ?(T) and ?(T) measurements, which we speculate are due to spin reorientation transitions; these second transitions are completely suppressed in H=5.5 T. The Cp data below 10 K for each composition indicate an enhanced Sommerfeld electronic heat capacity coefficient for the series in the range ?=2429 mJ/mol K2. The ?(T) measurements up to 1000 K were fitted by local-moment Curie-Weiss behaviors which indicate a low Mn spin S?1. The ? data below TN are analyzed using the Weiss molecular field theory for a planar noncollinear cycloidal AF structure with a composition-dependent pitch, following the previous neutron diffraction work of Venturini et al. [J. Alloys Compd. 256, 65 (1997)]. Within this model, the fits indicate a turn angle between Mn ordered moments along the cycloid axis of ?100? or ?145?, either of which indicate dominant AF interactions between the Mn spins in the Lu1?xScxMnSi series of compounds.

  18. On June 28, Los Alamos National Security, LLC and Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2-year-old retiree continues to make a difference April 3, 2012 Virginia Stovall: Vecinos' most "seasoned" volunteer at 102 continues to help others On June 28, Los Alamos National Security, LLC and Los Alamos National Laboratory will honor outstanding LANL employee and retiree Vecinos Volunteer Program volunteers. Volunteers who logged more than 100 hours of service last year will receive recognition, and a monetary donation will be made to the nonprofit organization they serve. The

  19. Museum LOS ALAMOS, N.M., Sept. 5, 2013-Los Alamos National Laboratory Director Charlie

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    lab director to link science education, national security in TEDxABQ talk September 5, 2013 Watch live stream at home or at Bradbury Science Museum LOS ALAMOS, N.M., Sept. 5, 2013-Los Alamos National Laboratory Director Charlie McMillan will discuss the linkage between national security and early education in science, technology, engineering, and mathematics (STEM) during a presentation at the TEDxABQ conference in Albuquerque on Saturday, Sept. 7. Although the event is expected to sell out

  20. Los Alamos, New Mexico, September 2, 2009-An award-winning Los Alamos National

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    strikes a chord with algal biofuels September 2, 2009 Award-winning acoustic focusing technology will help create 'green gold' Los Alamos, New Mexico, September 2, 2009-An award-winning Los Alamos National Laboratory sound-wave technology is helping Solix Biofuels, Inc. optimize production of algae-based fuel in a cost-effective, scalable, and environmentally benign fashion -paving the way to lowering the carbon footprint of biofuel production.Algae innards contain a high concentration of

  1. LOS ALAMOS, N.M., April 2, 2015-Randy Fraser of Los Alamos National Laboratory's

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Randy Fraser receives NNSA 2014 Security Professional of the Year award April 2, 2015 LOS ALAMOS, N.M., April 2, 2015-Randy Fraser of Los Alamos National Laboratory's Security, Safeguards and Emergency Response Directorate received a 2014 National Nuclear Security Administration Security Professional of the Year award. "I am extremely honored to have the privilege of presenting these amazing individuals with the Bradley A. Peterson Federal and Contractor Security Professional of the Year

  2. LOS ALAMOS, N.M., Dec. 15, 2014-The Los Alamos National Laboratory Fellows list

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Laboratory Fellows for 2014 December 15, 2014 Honorees span sciences in physics, astrophysics, chemistry LOS ALAMOS, N.M., Dec. 15, 2014-The Los Alamos National Laboratory Fellows list expands by five this week as a new group of high achievers is named. The honorees this year are Christopher L. Fryer, Herbert O. Funsten, John C. Gordon, Jaqueline L. Kiplinger and David S. Moore. "The sustained scientific excellence demonstrated by the work of Chris, Herb, John, Jaqueline and David

  3. LOS ALAMOS, N.M., Dec. 17, 2015-Scientists at Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    model more accurately tracks gases for underground nuclear explosion detection December 17, 2015 Model uniquely pairs seismic data with radionuclide fluid-flow models LOS ALAMOS, N.M., Dec. 17, 2015-Scientists at Los Alamos National Laboratory have developed a new, more thorough method for detecting underground nuclear explosions (UNEs) by coupling two fundamental elements-seismic models with gas-flow models-to create a more complete picture of how an explosion's evidence (radionuclide gases)

  4. LOS ALAMOS, N.M., Dec. 3, 2015-Los Alamos National Laboratory molecular

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    explore new strategies to improve photosynthesis, increase energy yields December 6, 2015 First talk is Monday, Dec. 7 in Albuquerque LOS ALAMOS, N.M., Dec. 3, 2015-Los Alamos National Laboratory molecular biologist Richard Sayre discusses how improving photosynthetic efficiency may result in substantial increases in crop yields during two Frontiers in Science lectures titled "Hacking Photosynthesis: Growing Plants to Power Our Engines and Feed the World" beginning Dec. 7 in

  5. LOS ALAMOS, N.M., Feb. 14, 2013-Recently a Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    put to work for electric grid security February 14, 2013 LOS ALAMOS, N.M., Feb. 14, 2013-Recently a Los Alamos National Laboratory quantum cryptography (QC) team successfully completed the first-ever demonstration of securing control data for electric grids using quantum cryptography. The demonstration was performed in the electric grid test bed that is part of the Trustworthy Cyber Infrastructure for the Power Grid (TCIPG) project at the University of Illinois Urbana-Champaign (UIUC) that was

  6. LOS ALAMOS, N.M., June 24, 2015-Scientists at Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ocean mixing reveals insight on climate June 24, 2015 Eddies pull carbon emissions into deep ocean, new model simulates complex process LOS ALAMOS, N.M., June 24, 2015-Scientists at Los Alamos National Laboratory have developed a computer model that clarifies the complex processes driving ocean mixing in the vast eddies that swirl across hundreds of miles of open ocean. "The model enables us to study the important processes of ocean storms, which move heat and carbon from the atmosphere

  7. LOS ALAMOS, N.M., March 24, 2015-Los Alamos National Laboratory mechanical

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    computer simulation improves offshore drill rig safety March 24, 2015 LOS ALAMOS, N.M., March 24, 2015-Los Alamos National Laboratory mechanical and thermal engineering researchers' efforts to solve the complex problem of how ocean currents affect the infrastructure of floating oilrigs and their computational fluid dynamics (CFD) numerical simulations received recognition from ANSYS Inc., a company that provides computer-based engineering simulation capabilities."Because energy resources

  8. LOS ALAMOS, N.M., May 22, 2013-Los Alamos National Laboratory's Bradbury

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    partnering in national Blue Star Museums program May 22, 2013 Free admission for active duty military, their family members LOS ALAMOS, N.M., May 22, 2013-Los Alamos National Laboratory's Bradbury Science Museum is again partnering with the National Endowment for the Arts, Blue Star Families Foundation and the Department of Defense in the Blue Star Museums program to host active duty military personnel and their families from Memorial Day, May 27, through Labor Day, Sept. 2. "In this the

  9. LOS ALAMOS, N.M., Nov. 19, 2013-Researchers at Los Alamos National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    virus spread and evolution studied through computer modeling November 19, 2013 LOS ALAMOS, N.M., Nov. 19, 2013-Researchers at Los Alamos National Laboratory are investigating the complex relationships between the spread of the HIV virus in a population (epidemiology) and the actual, rapid evolution of the virus (phylogenetics) within each patient's body. "We have developed novel ways of estimating epidemics dynamics such as who infected whom, and the true population incidence of infection

  10. LOS ALAMOS, N.M., Oct. 17, 2012-Researchers from Los Alamos National

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    travelers from deep space could assist in healing Fukushima's nuclear scar October 17, 2012 Researchers examine use of cosmic-ray radiography on damaged reactor cores LOS ALAMOS, N.M., Oct. 17, 2012-Researchers from Los Alamos National Laboratory have devised a method to use cosmic rays to gather detailed information from inside the damaged cores of the Fukushima Daiichi nuclear reactors, which were heavily damaged in March 2011 by a tsunami that followed a great earthquake. In a paper in

  11. LOS ALAMOS, N.M., Oct. 26, 2015-Scientists from Los Alamos National Laboratory,

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Nanoscale, multidimensional artificial magnet created October 26, 2015 Embargoed for 10 a.m. Mountain, Oct. 26, 2015 Tiny magnets could work in sensors, information encoding LOS ALAMOS, N.M., Oct. 26, 2015-Scientists from Los Alamos National Laboratory, in collaboration with a group at the University of Illinois at Urbana-Champaign, the Lawrence Berkeley National Laboratory's Advanced Light Source and with other researchers nationwide, have realized a nanoscale, artificial magnet by arranging an

  12. LOS ALAMOS, N.M., October 9, 2012-Researchers at Los Alamos National

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    crystallography aids drug design October 9, 2012 Precisely tailored pharmaceuticals could reduce medical side effects LOS ALAMOS, N.M., October 9, 2012-Researchers at Los Alamos National Laboratory have used neutron crystallography for the first time to determine the structure of a clinical drug in complex with its human target enzyme. Seeing the detailed structure of the bonded components provides insights into developing more effective drugs with fewer side effects for patients. - 2 - The

  13. LOS ALAMOS, NEW MEXICO, August 22, 2012-Nathan Moody of Los Alamos

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    engineer selected to participate in NAE's 2012 "Frontiers of Engineering" symposium August 22, 2012 - 2 - Nathan Moody, specialist in electromagnetic radiation, honored LOS ALAMOS, NEW MEXICO, August 22, 2012-Nathan Moody of Los Alamos National Laboratory is among 78 of the nation's brightest young engineers selected for the National Academy of Engineering's (NAE) 18th annual U.S. Frontiers of Engineering symposium. Engineers between 30 to 45 who are performing exceptional engineering

  14. LOS ALAMOS, NEW MEXICO, August 30,2012-Los Alamos National Laboratory

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    provides HOPE for radiation belt storm probes August 30, 2012 Spacecraft pair to explore mysterious region where other satellites fear to tread LOS ALAMOS, NEW MEXICO, August 30,2012-Los Alamos National Laboratory expertise in radiation detection and shielding is poised to help a national team of scientists better understand a mysterious region that can create hazardous space weather near our home planet. The Helium Oxygen Proton Electron (HOPE) analyzer is one of a suite of instruments that was

  15. LOS ALAMOS, New Mexico, April 12, 2011-Los Alamos National Laboratory today

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    two small businesses for water monitoring work April 12, 2011 Subcontract worth up to $80 million over five years LOS ALAMOS, New Mexico, April 12, 2011-Los Alamos National Laboratory today announced it has selected two small businesses to compete for up to $80 million in well drilling and groundwater monitoring work.The work will strengthen the Lab's ability to address groundwater monitoring requirements and contribute important data to LANL's investigation of Cold War-era waste

  16. LOS ALAMOS, New Mexico, April 20, 2010-Los Alamos National Laboratory today

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    final Recovery Act demolition contracts April 20, 2010 Two small businesses will demolish Cold War-era complex LOS ALAMOS, New Mexico, April 20, 2010-Los Alamos National Laboratory today announced it has awarded its final two demolition contracts under the American Recovery and Reinvestment Act. The two winning bidders will each demolish a portion of the remaining unused buildings at the Lab's historic Technical Area 21. ARSEC Environmental, LLC of White Rock, NM, received a $2 million task

  17. LOS ALAMOS, New Mexico, August 28, 2008-Physicists at Los Alamos National

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Magnetism and superconductivity observed to exist in harmony August 28, 2008 LOS ALAMOS, New Mexico, August 28, 2008-Physicists at Los Alamos National Laboratory, along with colleagues at institutions in Switzerland and Canada, have observed, for the first time in a single exotic phase, a situation where magnetism and superconductivity are necessary for each other's existence. Physicists have seen the battle for supremacy between the competing states of magnetism and superconductivity as one in

  18. LOS ALAMOS, New Mexico, August 4, 2010-Los Alamos National Laboratory today

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    first Recovery Act cleanup project August 4, 2010 Demolition of former fusion facility completed ahead of schedule LOS ALAMOS, New Mexico, August 4, 2010-Los Alamos National Laboratory today announced it has completed the first of four major environmental cleanup projects funded by the American Recovery and Reinvestment Act. The $13 million project involved demolition of an 18,000-square-foot former nuclear fusion research facility. "It's good to get this one under our belt," said

  19. LOS ALAMOS, New Mexico, December 20, 2010-Los Alamos National Laboratory

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    Top 10 science & technology developments of 2010 December 20, 2010 LOS ALAMOS, New Mexico, December 20, 2010-Los Alamos National Laboratory has named its Top 10 science and technology developments of 2010 based on major programmatic milestones, strategic potential, scholarly accounts, and associated news coverage. "The science featured here represents just a fraction of what we the Laboratory accomplished this year. But it does indicate the extreme breadth of national security science

  20. LOS ALAMOS, New Mexico, February 26, 2009- Officials at Los Alamos National

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    identifies internal material control issue February 26, 2009 LOS ALAMOS, New Mexico, February 26, 2009- Officials at Los Alamos National Laboratory have reported an internal material control error to the National Nuclear Security Administration. The error relates to internal inventory and accounting that documents movement of sensitive materials within a small portion of Technical Area 55, the Laboratory's plutonium research, development, and processing facility. There is 100 percent certainty