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Sample records for ac26-07nt42677 rpsea fe

  1. Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum Resources

    SciTech Connect (OSTI)

    Russell E. Fray

    2007-05-31

    RPSEA is currently in its first year of performance under contract DE-AC26-07NT42677, Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum Resources Program Administration. Significant progress has been made in establishing the program administration policies, procedures, and strategic foundation for future research awards. RPSEA has concluded an industry-wide collaborative effort to identify focus areas for research awards under this program. This effort is summarized in the RPSEA Draft Annual Plan, which is currently under review by committees established by the Secretary of Energy.

  2. Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum Resources

    SciTech Connect (OSTI)

    Russell E. Fray

    2007-06-30

    RPSEA is currently in its first year of performance under contract DE-AC26-07NT42677, Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum Resources Program Administration. Progress continues to be made in establishing the program administration policies, procedures, and strategic foundation for future research awards. Significant progress was made in development of the draft program solicitations. In addition, RPSEA personnel continued an aggressive program of outreach to engage the industry and ensure wide industry participation in the research award solicitation process.

  3. RPSEA REPORT PROCEDURES

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

    RPSEA Final Technical Report 08121.2201.02.FINAL Heavy Viscous Oil Pressure, Volume, and ... the physical properties of heavy viscous oil systems is a k ey aspect of a successful ...

  4. rpsea | netl.doe.gov

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

    Program Consortium - RPSEA The Strategic Center for Natural Gas and Oil (SCNGO) will carry out the task of overseeing all aspects of Title IX, Subtitle J of the Energy Policy Act of 2005 implementation. As directed by the legislation, SCNGO issued a solicitation in early FY06 for the selection of a consortium to administer programmatic research and development activities pertaining to the Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum Resources Program. In May 2006, RPSEA was

  5. Research Partnership to Secure Energy for America RPSEA | Open...

    Open Energy Info (EERE)

    Partnership to Secure Energy for America RPSEA Jump to: navigation, search Name: Research Partnership to Secure Energy for America (RPSEA) Place: Sugar Land, TX, Texas Zip: 77478...

  6. RPSEA Final Report

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

    ... 1 Figure 2 Crossplot of permeability vs. porosity of the Arbuckle dolomite core samples from Ogallah unit...

  7. 42677RPSEA | netl.doe.gov

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

    Petroleum Resources Program launched by Section 999 is a publicprivate partnership designed to increase America's domestic oil and gas supply and reduce dependency on imports. ...

  8. FIRST DRAFT OUTLINE OF FINAL REPORT FOR RPSEA PROJECT ENTITLED

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

    producers to pursue the residual oil zone (ROZ) fairways in the Permian Basin San Andres. ... small producers to pursue the residual oil zone (ROZ) fairways in the Permian Basin ...

  9. Santa Fe

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

    International science conferences in Santa Fe June 22, 2012 Focus on insulating materials and radiation effects in solids LOS ALAMOS, New Mexico, June 22, 2012-Los Alamos National...

  10. Santa Fe

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

    International science conferences in Santa Fe June 22, 2012 Focus on insulating materials and radiation effects in solids LOS ALAMOS, New Mexico, June 22, 2012-Los Alamos National Laboratory together with New Mexico Consortium, Los Alamos National Bank and Netzsch Group are sponsoring two international conferences in Santa Fe. Organizers anticipate the arrival of more than 300 scientists from around the world. What: * The 2012 International Conference on Defects in Insulating Materials is the

  11. Isotopic fractionation associated with [NiFe]- and [FeFe]-hydrogenases...

    Office of Scientific and Technical Information (OSTI)

    Isotopic fractionation associated with NiFe- and FeFe-hydrogenases Citation Details In-Document Search Title: Isotopic fractionation associated with NiFe- and ...

  12. miniFE

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

    miniFE miniFE Description FE is a Finite Element mini-application which implements a couple of kernels representative of implicit finite-element applications. It assembles a sparse...

  13. Getting to Santa Fe

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

    Getting to Santa Fe Getting to Santa Fe Find quick links on hotel and transportation information. Explore the surrounding area while you visit Santa Fe. Institute Administrator Caryll Blount Institute for Materials Science (505) 665-3950 Email La Fonda La Fonda on the Plaza 100 E. San Francisco St. Santa Fe, NM 87501 General phone numbers: 1-505-982-5511 1-800-523-5002 Concierge (Rebekah): concierge@lafondasantafe.com Additional Travel Information Santa Fe Travel site: This site provides you

  14. FinalTechnicalReport_15U5O2I-11_RPSEA.docx

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

    depth in the GOM: 1. Paired Column (PC) semi-submersible developed by Houston Offshore Engineering (HOE) 2. Deepwater Dry Tree Semi-submersible (DWDTS) developed by Kvaerner...

  15. miniFE

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

    miniFE miniFE Description FE is a Finite Element mini-application which implements a couple of kernels representative of implicit finite-element applications. It assembles a sparse linear-system from the steady-state conduction equation on a brick-shaped problem domain of linear 8-node hex elements. It then solves the linear-system using a simple un-preconditioned conjugate-gradient algorithm. Thus the kernels that it contains are: computation of element-operators (diffusion matrix, source

  16. Fe(A)

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

    Fe(A) Fe(B) O ( 0 0 1 ) ( 0 1 0 ) ( 1 0 0 ) (001) (010) Fe(A) layer Fe(B) layer (100) Surface R eac2vity o f I ron O xide G. S . P arkinson 1 *, Z . N ovotny 1 , P . J acobson 1 , T . M anz 2 , D . S . S holl 2 , F . N . W omack 3 , P . T . S prunger 3 a nd U . D iebold 1* 1 Ins2tute o f A pplied P hysics, V ienna U niversity o f T echnology, V ienna, A ustria 2 Georgia I ns2tute o f T echnology, A tlanta, G A 3 0332 U SA 3 Louisiana S tate U niversity, B aton R ouge, L A 7 0803 U SA

  17. Getting to Santa Fe

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

    with Road Runner for 65 + tax they will also take two passengers The Capital City Cab (Santa Fe taxi company) - 50 each way. Reservation not required Hertz car rental (LANL...

  18. Biomimetic model for [FeFe]-hydrogenase: Asymmetrically disubstituted

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

    diiron complex with a redox-active 2,2'-bipyridyl ligand Biomimetic model for [FeFe]-hydrogenase: Asymmetrically disubstituted diiron complex with a redox-active 2,2'-bipyridyl ligand Authors: Roy, S., Groy, T., Jones, A.K. Title: Biomimetic model for [FeFe]-hydrogenase: Asymmetrically disubstituted diiron complex with a redox-active 2,2'-bipyridyl ligand Source: Dalton Transactions Year: 2013 Volume: 42 Pages: 3843-3853 ABSTRACT: [FeFe]-hydrogenases feature a unique active site in which the

  19. Santa Fe, NM 87506

    Office of Environmental Management (EM)

    July 31, 2014 Ms. Kimberly Davis Lebak Manager Los Alamos Field Office 3747 West Jemez Road, MS A316 Los Alamos, NM 87544 Mr. Pete Maggiore Assistant Manager for Environmental Operations 3747 West Jemez Road, MS A316 Los Alamos, NM 87544 Dear Ms. Lebak and Mr. Maggiore, I am pleased to enclose Recommendation 2014-02, unanimously approved by the Northern New Mexico Citizens' Advisory Board at its July 30 th meeting in Santa Fe. Please call Lee Bishop, DDFO or Menice Santistevan, Executive

  20. Santa Fe Jets and Heavy Flavor Workshop

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

    Santa Fe Jets and Heavy Flavor Workshop Santa Fe Jets and Heavy Flavor Workshop WHEN: Jan 11, 2016 8:30 AM - Jan 13, 2016 5:30 PM WHERE: Inn and Spa at Loretto 211 Old Santa Fe...

  1. FE Clean Energy Group | Open Energy Information

    Open Energy Info (EERE)

    FE Clean Energy Group Jump to: navigation, search Name: FE Clean Energy Group Place: Darien, Connecticut Zip: 6820 Sector: Efficiency Product: A Private Equity Fund Manager which...

  2. FE Categorical Exclusions | Department of Energy

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

    FE Categorical Exclusions FE Categorical Exclusions RSS June 4, 2014 CX-011993: Categorical Exclusion Determination Cheniere Marketing, LLC CX(s) Applied: B5.7 Date: 06042014...

  3. FE Blog | Department of Energy

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

    implement the change. August 5, 2014 FE's Christopher Smith spoke recently during the Africa Leaders' Visit: Energy event in Houston. During the three-day event organized by the...

  4. FE Blog | Department of Energy

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

    with senior executives in the Office of Fossil Energy (FE). In this edition we talk to Paula Gant, Deputy Secretary for Oil and Gas August 17, 2015 Profiles in Leadership:...

  5. Photoionization of FE3+ Ions

    SciTech Connect (OSTI)

    Ovchinnikov, O.; Schlachter, F.

    2003-01-01

    Photoionization of Fe3+ ions was studied for the first time using synchrotron radiation from the Advanced Light Source (ALS) and the merged-beams technique. Fe3+ ions were successfully produced using ferrocene in an electron cyclotron resonance ion source (ECR). The measured yield of Fe4+ photoions as a function of photon energy revealed the presence of resonances that correspond to excitation of autoionizing states. These resonances are superimposed upon the photoion yield produced by direct photoionization, which is a smooth, slowly decreasing function of energy. The spectra for the photoionization of Fe3+ will be analyzed and compared with theory. The data collected will also serve to test models for the propagation of light through ionized matter.

  6. Microsoft Word - FeMoco.doc

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

    Fig. 1. Fourier transforms calculated over the k-range 2-16 Å -1 of EXAFS data (dotted) and fits (solid) from (left) MoFe protein- bound FeMoco and (right) the NifEN-bound FeMoco precursor. The EXAFS data were obtained, respectively, by subtraction of ΔnifB MoFe protein EXAFS from wild-type MoFe protein EXAFS and ΔnifB NifEN EXAFS from NifEN EXAFS. The insets show the structure of FeMoco (left) and a structural model consistent with the XAS analysis of the NifEN-bound FeMoco precursor

  7. Application of Gene-Shuffling for the Rapid Generation of Novel [FeFe]-Hydrogenase Libraries

    SciTech Connect (OSTI)

    Nagy, L. E.; Meuser, J. E.; Plummer, S.; Seibert, M.; Ghirardi, M. L.; King, P. W.; Ahmann, D.; Posewitz, M. C.

    2007-01-01

    A gene-shuffling technique was identified, optimized and used to generate diverse libraries of recombinant [FeFe]-hydrogenases. Six native [FeFe]-hydrogenase genes from species of Clostridia were first cloned and separately expressed in Escherichia coli concomitantly with the assembly proteins required for [FeFe]-hydrogenase maturation. All enzymes, with the exception of C. thermocellum HydA, exhibited significant activity when expressed. Single-stranded DNA fragments from genes encoding the two most active [FeFe]-hydrogenases were used to optimize a gene-shuffling protocol and generate recombinant enzyme libraries. Random sampling demonstrates that several shuffled products are active. This represents the first successful application of gene-shuffling using hydrogenases. Moreover, we demonstrate that a single set of [FeFe]-hydrogenase maturation proteins is sufficient for the heterologous assembly of the bioinorganic active site of several native and shuffled [FeFe]-hydrogenases.

  8. Microsoft Word - FeV.doc

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

    Fe K-edge XAS spectra of the Fe(III)-azide precursor (black) and the Fe(V)-nitrido complex (red) Characterization of a Genuine S=1/2 Fe(V) Complex Núria Aliaga-Alcalde, 1 Serena DeBeer George, 2 Bernd Mienert, 1 Eckhard Bill, 1 Karl Wieghardt 1 and Frank Neese 11 1 Max Planck Institut für Bioanorganische Chemie, Mülheim an der Ruhr, Germany 2 Stanford Synchrotron Radiation Laboratory, SLAC, Stanford University, Stanford, CA High-valent Fe(IV) and Fe(V) intermediates are invoked in the

  9. NNMCAB Board Minutes: September 2006 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the September 27, 2006 Board meeting at Santa Fe Community College Presentation LANL, Transuranic Waste Program, Lee Lucero

  10. NNMCAB Board Minutes: January 2006 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the January 25, 2006 Board meeting at Santa Fe Community College Presentation LANL, Groundwater Issues

  11. NNMCAB Board Minutes: June 2001 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the June 20, 2001 Board meeting at Hotel Santa Fe Presentation NNMCAB Waste Management Committee

  12. NNMCAB Board Minutes: November 2010 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the November 17, 2010 Board meeting at Lodge at Santa Fe Presentation LANL, Environmental Surveillance Report for 2009

  13. NNMCAB Board Minutes: September 2008 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the September 24, 2008 Board meeting at Santa Fe Community College Consideration and Action on Recommendations

  14. NNMCAB Board Minutes: July 2008 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the July 30, 2008 Board meeting at Santa Fe Community College Presentation LANL, Upcoming Consent Order Deliverables

  15. NNMCAB Board Minutes: November 2008 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the November 19, 2008 Board meeting at Santa Fe Community College Presentation LANL, Environmental Surveillance Report

  16. Santa Fe Jets and Heavy Flavor Workshop

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

    Santa Fe Jets and Heavy Flavor Workshop Santa Fe Jets and Heavy Flavor Workshop WHEN: Jan 11, 2016 8:30 AM - Jan 13, 2016 5:30 PM WHERE: Inn and Spa at Loretto 211 Old Santa Fe Trail Santa Fe, New Mexico 87501 USA CONTACT: Ivan Vitev CATEGORY: Science TYPE: Conference INTERNAL: Calendar Login Event Description This workshop will bring together senior researchers, postdoctoral fellows and talented graduate students to discuss the exciting recent developments and future directions in high energy

  17. Process and genes for expression and overexpression of active [FeFe] hydrogenases

    DOE Patents [OSTI]

    Seibert, Michael; King, Paul W; Ghirardi, Maria Lucia; Posewitz, Matthew C; Smolinski, Sharon L

    2014-09-16

    A process for expression of active [FeFe]-hydrogenase in a host organism that does not contain either the structural gene(s) for [FeFe]-hydrogenases and/or homologues for the maturation genes HydE, HydF and HyG, comprising: cloning the structural hydrogenase gene(s) and/or the maturation genes HydE, HydF and HydG from an organisms that contains these genes into expression plasmids; transferring the plasmids into an organism that lacks a native [FeFe]-hydrogenase or that has a disrupted [FeFe]-hydrogenase and culturing it aerobically; and inducing anaerobiosis to provide [FeFe] hydrogenase biosynthesis and H?2#191 production.

  18. Radiation effects on interface reactions of U/Fe, U/(Fe+Cr), and U/(Fe+Cr+Ni)

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

    Shao, Lin; Chen, Di; Wei, Chaochen; Martin, Michael S.; Wang, Xuemei; Park, Youngjoo; Dein, Ed; Coffey, Kevin R.; Sohn, Yongho; Sencer, Bulent H.; et al

    2014-10-01

    We study the effects of radiation damage on interdiffusion and intermetallic phase formation at the interfaces of U/Fe, U/(Fe + Cr), and U/(Fe + Cr + Ni) diffusion couples. Magnetron sputtering is used to deposit thin films of Fe, Fe + Cr, or Fe + Cr + Ni on U substrates to form the diffusion couples. One set of samples are thermally annealed under high vacuum at 450 C or 550 C for one hour. A second set of samples are annealed identically but with concurrent 3.5 MeV Fe++ ion irradiation. The Fe++ ion penetration depth is sufficient to reachmore »the original interfaces. Rutherford backscattering spectrometry analysis with high fidelity spectral simulations is used to obtain interdiffusion profiles, which are used to examine differences in U diffusion and intermetallic phase formation at the buried interfaces. For all three diffusion systems, Fe++ ion irradiations enhance U diffusion. Furthermore, the irradiations accelerate the formation of intermetallic phases. In U/Fe couples, for example, the unirradiated samples show typical interdiffusion governed by Fick’s laws, while the irradiated ones show step-like profiles influenced by Gibbs phase rules.« less

  19. Radiation effects on interface reactions of U/Fe, U/(Fe+Cr), and U/(Fe+Cr+Ni)

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

    Shao, Lin; Chen, Di; Wei, Chaochen; Martin, Michael S.; Wang, Xuemei; Park, Youngjoo; Dein, Ed; Coffey, Kevin R.; Sohn, Yongho; Sencer, Bulent H.; et al

    2014-10-01

    We study the effects of radiation damage on interdiffusion and intermetallic phase formation at the interfaces of U/Fe, U/(Fe + Cr), and U/(Fe + Cr + Ni) diffusion couples. Magnetron sputtering is used to deposit thin films of Fe, Fe + Cr, or Fe + Cr + Ni on U substrates to form the diffusion couples. One set of samples are thermally annealed under high vacuum at 450 C or 550 C for one hour. A second set of samples are annealed identically but with concurrent 3.5 MeV Fe++ ion irradiation. The Fe++ ion penetration depth is sufficient to reachmore » the original interfaces. Rutherford backscattering spectrometry analysis with high fidelity spectral simulations is used to obtain interdiffusion profiles, which are used to examine differences in U diffusion and intermetallic phase formation at the buried interfaces. For all three diffusion systems, Fe++ ion irradiations enhance U diffusion. Furthermore, the irradiations accelerate the formation of intermetallic phases. In U/Fe couples, for example, the unirradiated samples show typical interdiffusion governed by Fick’s laws, while the irradiated ones show step-like profiles influenced by Gibbs phase rules.« less

  20. Radiation effects on interface reactions of U/Fe, U/(Fe+Cr), and U/(Fe+Cr+Ni)

    SciTech Connect (OSTI)

    Shao, Lin; Chen, Di; Wei, Chaochen; Martin, Michael S.; Wang, Xuemei; Park, Youngjoo; Dein, Ed; Coffey, Kevin R.; Sohn, Yongho; Sencer, Bulent H.; Rory Kennedy, J.

    2014-10-01

    We study the effects of radiation damage on interdiffusion and intermetallic phase formation at the interfaces of U/Fe, U/(Fe + Cr), and U/(Fe + Cr + Ni) diffusion couples. Magnetron sputtering is used to deposit thin films of Fe, Fe + Cr, or Fe + Cr + Ni on U substrates to form the diffusion couples. One set of samples are thermally annealed under high vacuum at 450 C or 550 C for one hour. A second set of samples are annealed identically but with concurrent 3.5 MeV Fe++ ion irradiation. The Fe++ ion penetration depth is sufficient to reach the original interfaces. Rutherford backscattering spectrometry analysis with high fidelity spectral simulations is used to obtain interdiffusion profiles, which are used to examine differences in U diffusion and intermetallic phase formation at the buried interfaces. For all three diffusion systems, Fe++ ion irradiations enhance U diffusion. Furthermore, the irradiations accelerate the formation of intermetallic phases. In U/Fe couples, for example, the unirradiated samples show typical interdiffusion governed by Fick’s laws, while the irradiated ones show step-like profiles influenced by Gibbs phase rules.

  1. Synthesis of high magnetization Fe and FeCo nanoparticles by high temperature chemical reduction

    SciTech Connect (OSTI)

    Kandapallil, B; Colborn, RE; Bonitatibus, PJ; Johnson, F

    2015-03-15

    Fe and FeCo ferromagnetic nanoparticles in the 5-10 nm size regimes featuring high magnetization were synthesized using a modified chemical reduction method. The structure and morphology of these nanoparticles were confirmed by XRD and TOM analysis. These small, monodisperse and phase pure nanoparticles exhibited magnetic saturation of 210 emu/g (Fe) and 220 emu/g (Fe+Co) for Fe and FeCo nanoparticles respectively. The magnetization was found to be dependent on the temperature at which the reducing agent was introduced. (C) 2014 Elsevier B.V. All rights reserved,

  2. Fe-based long range ordered alloys

    DOE Patents [OSTI]

    Liu, Chain T; Inouye, Henry; Schaffhauser, Anthony C.

    1980-01-01

    Malleable long range ordered alloys having high critical ordering temperatures exist in the V(Co,Fe).sub.3 and V(Co,Fe,Ni).sub.3 system having the composition comprising by weight 22-23% V, 35-50% Fe, 0-22% Co and 19-40% Ni with an electron density no greater than 8.00. Excellent high temperature properties occur in alloys having compositions comprising by weight 22-23% V, 35-45% Fe, 0-10% Co, 25-35% Ni; 22-23% V, 28-33% Ni and the remainder Fe; and 22-23% V, 19-22% Ni, 19-22% Co and the remainder Fe. The alloys are fabricable by casting, deforming and annealing for sufficient time to provide ordered structure.

  3. Fe-based long range ordered alloys

    DOE Patents [OSTI]

    Liu, C.T.

    Malleable long range ordered alloys with high critical ordering temperatures exist in the V(Co,Fe)/sub 3/ and V(Co,Fe,Ni)/sub 3/ system. The composition comprising by weight 22 to 23% V, 35 to 50% Fe, 0 to 22% Co and 19 to 40% Ni with an electron density no greater than 8.00. Excellent high temperature properties occur in alloys having compositions comprising by weight 22 to 23% V, 35 to 45% Fe, 0 to 10% Co, 25 to 35% Ni; 22 to 23% V, 28 to 33% Ni and the remainder Fe; and 22 to 23% V, 19 to 22% Co and the remainder Fe. The alloys are fabricable by casting, deforming and annealing for sufficient time to provide ordered structure.

  4. FE Blog | Department of Energy

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

    Blog FE Blog RSS August 3, 2016 NETL researcher Kelly Rose, co-developer of one of the four NETL technologies chosen as finalists for the 2016 R&D 100 Awards Game-Changing NETL Technologies Named Finalists for Prestigious R&D 100 Awards Four technologies developed by researchers at the National Energy Technology Laboratory (NETL) have been named finalists for this year's R&D 100 Awards. The selected technologies reflect the laboratory's focus on science and technology innovations

  5. Santa Fe Community College selects new president

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

    Santa Fe Community College Selects New President Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue: September 1, 2016 all issues All Issues » submit Santa Fe Community College selects new president Santa Fe Community College's new president will be Dr. Ana Margarita "Cha" Guzmán. August 1, 2012 dummy image Read our archives Contacts Editor Linda Anderman Email Community Programs Office Kurt Steinhaus Email Beginning September

  6. FE - Fossil Energy - Energy Conservation Plan

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

    Enclosure (1) Office of Fossil Energy Energy Conservation Plan The Office of Fossil Energy (FE) strongly supports the implementation of strategies to reduce energy consumption in the Headquarters buildings. FE engaged its employees by sending an office-wide email soliciting input for this plan; the ideas were then compiled into this document. The focus of this plan is on how FE employees can change their behavior to reduce energy consumption. This plan purposefully excludes measures that would

  7. Equations of state in the Fe-FeSi system at high pressures and...

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Search Results Journal Article: Equations of state in the Fe-FeSi system ... Country of Publication: United States Language: ENGLISH Word Cloud More Like This Full ...

  8. High-pressure viscosity of liquid Fe and FeS revisited by falling...

    Office of Scientific and Technical Information (OSTI)

    High-pressure viscosity of liquid Fe and FeS revisited by falling sphere viscometry using ultrafast X-ray imaging Citation Details In-Document Search This content will become ...

  9. Fe-V redox flow batteries

    DOE Patents [OSTI]

    Li, Liyu; Kim, Soowhan; Yang, Zhenguo; Wang, Wei; Zhang, Jianlu; Chen, Baowei; Nie, Zimin; Xia, Guanguang

    2014-07-08

    A redox flow battery having a supporting solution that includes Cl.sup.- anions is characterized by an anolyte having V.sup.2+ and V.sup.3+ in the supporting solution, a catholyte having Fe.sup.2+ and Fe.sup.3+ in the supporting solution, and a membrane separating the anolyte and the catholyte. The anolyte and catholyte can have V cations and Fe cations, respectively, or the anolyte and catholyte can each contain both V and Fe cations in a mixture. Furthermore, the supporting solution can contain a mixture of SO.sub.4.sup.2- and Cl.sup.- anions.

  10. NNMCAB Board Minutes: July 2006 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the July 26, 2006 Board meeting at Santa Fe Community College Consideration and Action on Recommendation 2006-05 and 2006-07

  11. NNMCAB Board Agenda: December 2014 Santa Fe

    Broader source: Energy.gov [DOE]

    Agenda for the December 10, 2014 Special Board meeting at Lodge at Santa Fe Presentation DOE, Transition EM Legacy Clean-up at Los Alamos, Jack Craig

  12. NNMCAB Board Minutes: January 2008 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the January 30, 2008 Board meeting at Santa Fe Community College Presentation DOE, Quarterly Progress Review and Budget Update on Environmental Programs at LANL, David Gregory

  13. NNMCAB Board Minutes: September 2005 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the September 28, 2005 Board meeting at Santa Fe Community College Presentation Risk Assessment Corporation, Risk Assessments, Helen Grogan Consideration and Action on Recommendations

  14. NNMCAB Board Minutes: September 2007 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the September 19, 2007 Board meeting at Santa Fe Community College Presentation DOE, Quarterly Performance Reports on Environmental Programs, George Rael

  15. NNMCAB Board Minutes: March 2008 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the March 26, 2008 Board meeting at Santa Fe Community College Presentations LANL, How Does LANL Conduce Risk Assessment, Rich Mirenda

  16. NNMCAB Board Minutes: November 2007 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the November 28, 2007 Board meeting at Santa Fe Community College Presentation LANL, LANL Responses to 17 National Academies of Sciences Recommendations Regarding Groundwater Monitoring, Huber

  17. fe0024271-utaustin | netl.doe.gov

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

    Fracture Diagnostics Using Low Frequency Electromagnetic Induction and Electrically Conductive Proppants Last Reviewed 12415 DE-FE0024271 Goal The project goal is to develop a...

  18. NNMCAB Board Minutes: January 2014 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the January 29, 2014 Board meeting at Lodge at Santa Fe Presentation DOE/LANL, Material Disposal Area G, Pete Maggiore, Jeff Mousseau

  19. NNMCAB Board Minutes: May 2013 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the May 22, 2013 Board meeting at The Lodge at Santa Fe Presentation LANL, Update on Chromium Filed Work, Dave McInroy, Danny Katzman

  20. International science conferences in Santa Fe

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

    International science conferences International science conferences in Santa Fe The conference are 2012 International Conference on Defects in Insulating Materials and Computer ...

  1. FE0001175_PTTC | netl.doe.gov

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

    Department of Energy FE-Supported Research Looks to Coal as a Source for Rare Earth Elements FE-Supported Research Looks to Coal as a Source for Rare Earth Elements June 16, 2016 - 8:34am Addthis FE-Supported Research Looks to Coal as a Source for Rare Earth Elements The Energy Department's Office of Fossil Energy (FE) has a robust clean energy research and development (R&D) program dedicated to making coal both cleaner and more sustainable. You may have heard about some of the

  2. Microsoft Word - Fe-S_Clusters

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

    April 2010 Figure 1. Top: overall ribbon and surface representation of the x-ray crystal structure of [FeFe]-hydrogenase HydA ΔEFG . Loop regions important for the cluster insertion process are colored green. Bottom: Ball and stick representation of the active site of HydA ΔEFG at which a [4Fe-4S] cluster is present. Coloring scheme: rust, iron; orange, sulfur; gray, carbon; red, oxygen; blue, nitrogen. Assembly and Evolution of Complex Fe-S Clusters as Revealed by X-ray Crystallography

  3. Quasi-elastic region of the /sup 56/Fe + /sup 56/Fe and /sup 56/Fe + /sup 238/U reactions

    SciTech Connect (OSTI)

    Weston-Dawkes, A.P.

    1986-01-01

    Projectile-like fragments (PLF's) were detected for the 15-MeV/uFe + Fe and Fe + U reactions. The mass, charge and energy of the PLF's were recorded. For the Fe + Fe reaction light-charged particles were also recorded in coincidence with PLF's. Products with kinetic energies corresponding to the first 100 MeV of energy loss were studied in detail for a variety of questions that remain concerning the quasi-elastic region. PLF energy spectra clearly show the presence of structures. These structures can be classified as either narrow or broad in kinetic energy width. By use of evaporation calculations, it was shown that broad structures were due to normal evaporation processes. Narrow structures with widths of 8 to 10 MeV could not be duplicated by evaporation calculations and their origin is still unexplained.

  4. InP:Fe Photoconducting device

    DOE Patents [OSTI]

    Hammond, Robert B.; Paulter, Nicholas G.; Wagner, Ronald S.

    1984-01-01

    A photoconducting device fabricated from Fe-doped, semi-insulating InP crystals exhibits an exponential decay transient with decay time inversely related to Fe concentration. Photoconductive gain as high as 5 is demonstrated in photoconducting devices with AuGe and AuSn contacts. Response times from 150 to 1000 picoseconds can be achieved.

  5. InP:Fe photoconducting device

    DOE Patents [OSTI]

    Hammond, R.B.; Paulter, N.G.; Wagner, R.S.

    A photoconducting device fabricated from Fe-doped, semi-insulating InP crystals exhibits an exponential decay transient with decay time inversely related to Fe concentration. Photoconductive gain as high as 5 is demonstrated in photoconducting devices with AuGe and AuSn contacts. Response times from 150 to 1000 picoseconds can be achieved.

  6. A Series of Highly Stable Mesoporous Metalloporphyrin Fe-MOFs...

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

    A series of mesoporous metalloporphyrin Fe-MOFs, namely PCN-600(M) (M Mn, Fe, Co, Ni, Cu), have been synthesized using the preassembled Fe3O(OOCCH3)6 building block....

  7. FE FY 2016 BUDGET REQUEST PRESENTATION | Department of Energy

    Energy Savers [EERE]

    PRESENTATION FE FY 2016 BUDGET REQUEST PRESENTATION FY16budgetrollout 2-2-15.pdf (967.91 KB) More Documents & Publications FE FY 2015 Budget Request Presentation FE FY 2017

  8. FE FY 2015 Budget Request Presentation | Department of Energy

    Energy Savers [EERE]

    5 Budget Request Presentation FE FY 2015 Budget Request Presentation fy15budgetrollout.pptx (4.07 MB) More Documents & Publications FE FY 2017 BUDGET REQUEST PRESENTATION FE FY ...

  9. Controlled Anisotropic Growth of Co-Fe-P from Co-Fe-O Nanoparticles

    SciTech Connect (OSTI)

    Mendoza-Garcia, Adriana; Zhu, Huiyuan; Yu, Yongsheng; Li, Qing; Zhou, Lin; Su, Dong; Kramer, Matthew J.; Sun, Shouheng

    2015-06-26

    Presented here is a facile approach to bimetallic phosphides, Co-Fe-P, via high-temperature (300C) reaction between Co-Fe-O nanoparticles and trioctylphosphine. The growth of Co-Fe-P from the Co-Fe-O is anisotropic. As a result, Co-Fe-P nanorods (from the polyhedral Co-Fe-O nanoparticles) and sea-urchin-like Co-Fe-P (from the cubic Co-Fe-O nanoparticles) are synthesized with both nanorod and the sea-urchin-arm dimensions controlled by Co/Fe ratios. The Co-Fe-P structure, especially the sea-urchin-like (Co0.54Fe0.46)2P, shows enhanced catalysis for oxygen evolution reaction in KOH with its catalytic efficiency surpassing Ir catalyst. Our synthesis is simple and may be readily extended to the preparation of other multimetallic phosphides for important catalysis and energy storage applications.

  10. Controlled Anisotropic Growth of Co-Fe-P from Co-Fe-O Nanoparticles

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

    Mendoza-Garcia, Adriana; Zhu, Huiyuan; Yu, Yongsheng; Li, Qing; Zhou, Lin; Su, Dong; Kramer, Matthew J.; Sun, Shouheng

    2015-06-26

    Presented here is a facile approach to bimetallic phosphides, Co-Fe-P, via high-temperature (300°C) reaction between Co-Fe-O nanoparticles and trioctylphosphine. The growth of Co-Fe-P from the Co-Fe-O is anisotropic. As a result, Co-Fe-P nanorods (from the polyhedral Co-Fe-O nanoparticles) and sea-urchin-like Co-Fe-P (from the cubic Co-Fe-O nanoparticles) are synthesized with both nanorod and the sea-urchin-arm dimensions controlled by Co/Fe ratios. The Co-Fe-P structure, especially the sea-urchin-like (Co0.54Fe0.46)2P, shows enhanced catalysis for oxygen evolution reaction in KOH with its catalytic efficiency surpassing Ir catalyst. Our synthesis is simple and may be readily extended to the preparation of other multimetallic phosphides for importantmore » catalysis and energy storage applications.« less

  11. SEMI-ANNUAL REPORTS -- WENTWORTH GAS MARKETING LLC - FTA - FE...

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

    - TEXAS LNG BROWNSVILLE LLC - FE DKT. 15-62-LNG - Order 3716 FTA Wentworth Gas Martketing LLC - FE Dkt. No. 14-63-CNG

  12. A Series of Highly Stable Mesoporous Metalloporphyrin Fe-MOFs...

    Office of Scientific and Technical Information (OSTI)

    A Series of Highly Stable Mesoporous Metalloporphyrin Fe-MOFs Citation Details In-Document Search Title: A Series of Highly Stable Mesoporous Metalloporphyrin Fe-MOFs Authors: ...

  13. Isolation and microbial reduction of Fe(III) phyllosilicates...

    Office of Scientific and Technical Information (OSTI)

    Isolation and microbial reduction of Fe(III) phyllosilicates from subsurface sediments Citation Details In-Document Search Title: Isolation and microbial reduction of Fe(III) ...

  14. NNMCAB Board Minutes: September 2009 Santa Fe | Department of...

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

    - September 30, 2009 More Documents & Publications NNMCAB Board Minutes: May 2009 Santa Fe NNMCAB Board Minutes: January 2009 Santa Fe NNMCAB Board Minutes: March 2009 Santa...

  15. SF 6432-FE Fixed Price Contracts Outside the US

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

    SANDIA CORPORATION SF 6432-FE (112015) SECTION II STANDARD TERMS AND CONDITIONS FOR FIXED ... FOR HIRE Control : SF 6432-FE Title: Standard Terms & Conditions for Fixed Price ...

  16. FE0023592 | netl.doe.gov

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

    FE0023592 Breakthrough Hybrid CTL Process Integrating Advanced Technologies for Coal Gasification, NG Partial Oxidation, Warm Syngas Cleanup and Syngas-to-Jet Email Page email Print This Page print Performer: Research Triangle Institute fe0023592-image.jpg Block Flow Diagram of Hybrid Integrated CTL Process Website: Research Triangle Institute Award Number: FE0023592 Project Duration: 10/01/2014 - 03/31/2017 Total Award Value: $5,500,000.00 DOD Share: $3,981,705.00 DOE Share: $418,295.00

  17. fe0024311-ttu | netl.doe.gov

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

    Maximize Liquid Oil Production from Shale Oil and Gas Condensate Reservoirs by Cyclic Gas Injection Last Reviewed 5202016 DE-FE0024311 Goal The project goal is to evaluate the ...

  18. NNMCAB Board Minutes: July 2005 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the July 27, 2005 Board meeting at Santa Fe Community College Presentation LANL, Public Health Assessment for Los Alamos National Laboratory, Michael Brooks Presentation LANL, Well Drilling Techniques, Groundwater Program

  19. NNMCAB Board Agenda: January 2014 Santa Fe

    Broader source: Energy.gov [DOE]

    Agenda for the January 29, 2014 Board meeting at Lodge at Santa Fe Presentation DOE.LANL, MDA-G Post TRU Waste Retrieval Proposed Remedy; A Path to Long Term Stewardship, Pete Maggiore, Jeff Mousseau

  20. NNMCAB Board Minutes: March 2005 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the March 30, 2005 Board meeting at Santa Fe Community College Consideration and Action on Recommendation 2005-03 Consideration and Action on Recommendation 2005-04

  1. NNMCAB Board Minutes: December 2014 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the December 10, 2014 Special Board meeting at Lodge at Santa Fe Presentation DOE HQ, Transition of Environmental Management Clean-up at LANL, Jack Craig Presentation RCLC, Perspectives from the Regional Coalition of LANL Communities, Darien Cabral

  2. NNMCAB Board Minutes: March 2010 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the March 31, 2010 Board meeting at Lodge at Santa Fe Presentation DOE/LANL Los Alamos National Security Reorganization, George Rael, Michael Graham Presentation DOE, Inventory of Waste at Area G, George Henkel

  3. FE0023592 | netl.doe.gov

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

    FE0023592 Project Duration: 10012014 - 03312017 Total Award Value: 5,500,000.00 DOD Share: 3,981,705.00 DOE Share: 418,295.00 Performer Share: 1,100,000.00 Technology ...

  4. fe0001547 | netl.doe.gov

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

    1547 Recovery Act: CO2 Capture From Biofuels Production and Sequestration into the Mt. Simon Sandstone Reservoir Email Page email Print This Page print Performer: Archer Daniels Midland Corporation (ADM) fe0001547 ADM's Agricultural Processing and Biofuels Plant, Decatur, IL. Website: Archer Daniels Midland Corporation (ADM) Award Number: FE0001547 Project Duration: 11/16/2009 - 09/30/2017 Total Award Value: $207,942,199.00 DOE Share: $141,405,945.00 Performer Share: $66,536,254.00 Technology

  5. fe0024360-paulsson | netl.doe.gov

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

    fe0024360-paulsson Injection and Tracking of Micro-seismic emitters to Optimize Unconventional Oil and Gas (UOG) Development Last Reviewed 6/14/2016 DE-FE0024360 Goal The project goal is to develop fracture and fractureproppant mapping and monitoring technologies that will allow for both efficient and environmentally prudent development of UOG by developing and simultaneously deploying two novel technologies in an UOG well. The first technology, an acoustic micro emitter (AME) can be mixed with

  6. DNA analysis conference in Santa Fe

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

    DNA analysis conference in Santa Fe DNA analysis conference in Santa Fe Los Alamos National Laboratory is hosting a DNA sequence analysis and bioinformatics event, the 10th annual Sequencing, Finishing and Analysis in the Future (SFAF) workshop. May 27, 2015 DNA extracted from a soil sample is stored in a small vial of clear liquid. In general, living cells function by using the sequences of bases in their DNA as a blueprint for assembling proteins. A particularly important type of protein is

  7. Identification of Highly Active Fe Sites in (Ni,Fe)OOH for Electrocatalytic

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

    Water Splitting | Stanford Synchrotron Radiation Lightsource Identification of Highly Active Fe Sites in (Ni,Fe)OOH for Electrocatalytic Water Splitting Thursday, April 30, 2015 Operando XAS showing structural changes at Fe dopants in Ni(OH)2/NiOOH host structure. Ni(OH)2 is oxidized into γ-NiOOH under OER operating conditions, inducing significant M-O bond contraction at both Ni and Fe sites. Theoretical modeling of site specific OER overpotentials using DFT+U reveals the origin of

  8. 57Fe Mössbauer study of Lu2Fe3Si5 iron silicide superconductor

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

    Ma, Xiaoming; Ran, Sheng; Pang, Hua; Li, Fashen; Canfield, Paul C.; Bud'ko, Sergey L.

    2015-08-01

    With the advent of Fe–As based superconductivity it has become important to study how superconductivity manifests itself in details of 57Fe Mössbauer spectroscopy of conventional, Fe-bearing superconductors. The iron-based superconductor Lu2Fe3Si5 has been studied by 57Fe Mössbauer spectroscopy over the temperature range from 4.4 K to room temperature with particular attention to the region close to the superconducting transition temperature (Tc=6.1 K). Consistent with the two crystallographic sites for Fe in this structure, the observed spectra appear to have a pattern consisting of two doublets over the whole temperature range. Furthermore, the value of Debye temperature was estimated from temperaturemore » dependence of the isomer shift and the total spectral area and compared with the specific heat capacity data. Neither abnormal behavior of the hyperfine parameters at or near Tc, nor phonon softening were observed.« less

  9. The mechanical properties of FeAl

    SciTech Connect (OSTI)

    Baker, I.; George, E.P.

    1996-12-31

    Only in the last few years has progress been made in obtaining reproducible mechanical properties data for FeAl. Two sets of observations are the foundation of this progress. The first is that the large vacancy concentrations that exist in FeAl at high temperature are easily retained at low temperature and that these strongly affect the low-temperature mechanical properties. The second is that RT ductility is adversely affected by water vapor. Purpose of this paper is not to present a comprehensive overview of the mechanical properties of FeAl but rather to highlight our understanding of key phenomena and to show how an understanding of the factors which control the yield strength and fracture behavior has followed the discovery of the above two effects. 87 refs, 9 figs.

  10. Magnetoelasticity of Fe-Si single crystals

    SciTech Connect (OSTI)

    Xing, Q; Wu, D.; Lograsso, T. A.

    2010-04-20

    The tetragonal magnetostriction constant, (3/2){lambda}{sub 100}, of Fe-Si single crystals was measured and was found to be structure dependent. Similar to that of Fe-Ge single crystals, (3/2){lambda}{sub 100} is positive in the single phase A2 regime, becomes negative in the single phase D0{sub 3} regime, and changes from positive to negative between the two regimes. Short-range order in the A2 regime decreases the magnetostriction prior to the onset of long range order. In the single phase regions of both A2 and D0{sub 3}, thermal history does not show any obvious effect on the magnetostriction, contrary to that found for Fe-Ga alloys. However, in the regions of phase mixture involving A2, B2, and D0{sub 3} phases, quenching pushes the change in magnetostriction from positive to negative to higher Si contents.

  11. Magnetic interaction in oxygenated alpha Fe-phthalocyanines

    SciTech Connect (OSTI)

    Kuzmann, Ern?, E-mail: kuzmann@caesar.elte.hu; Homonnay, Zoltn; Horvth, Attila [Institute of Chemistry, Etvs Lornd University, P.O. Box 32, 1512 Budapest (Hungary); Pechousek, Jiri; Cuda, Jan; Machala, Libor; Zoppellaro, Giorgio; Zboril, Radek [Regional Centre of Advanced Technologies and Materials, Departments of Experimental Physics and Physical Chemistry, Faculty of Science Palacky University, 17. Listopadu 1192/12, 771 46 Olomouc (Czech Republic); Yin, Houping; Wei, Yen [Department of Chemistry, Drexel University, Philadelphia, PA 19104 (United States); Klencsr, Zoltn [Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, 1117 (Hungary); Kubuki, Shiro [Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachi-Oji, Tokyo 192-0397 (Japan); Nath, Amar [Department of Chemistry, University of North Carolina, Asheville, NC 28804 (United States)

    2014-10-27

    Alpha iron phthalocyanines (?-FePc) oxygenated at low temperatures were investigated with the help of {sup 57}Fe Mssbauer spectroscopy, magnetization measurements (SQUID) and X-ray diffractometry (XRD). Mssbauer spectroscopy revealed that upon oxygenation of ?-FePc, new species were formed which could be associated with Fe{sup III}Pc oxygen adducts. Unexpectedly, magnetically split spectrum of oxygenated ?-FePc was observed below 20 K. In-field Mssbauer spectra in a 5 T external magnetic field at 5K and magnetization measurements indicate antiferromagnetic coupling in oxygenated ?-FePc.

  12. Membrane separation advances in FE hydrogen program

    SciTech Connect (OSTI)

    2007-12-31

    Since its inception in Fiscal Year 2003 the US Office of Fossil Energy (FE) Hydrogen from Coal Program has sponsored more than 60 projects and made advances in the science of separating out pure hydrogen from syngas produced through coal gasification. The Program is focusing on advanced hydrogen separation technologies, which include membranes, and combining the WGS reaction and hydrogen separation in a single operation known as process intensification. The article explains the technologies and describes some key FE membrane projects. More details are available from http://www.fossil.energy.gov. 1 fig.

  13. FE Categorical Exclusions | Department of Energy

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

    FE Categorical Exclusions FE Categorical Exclusions RSS May 25, 2016 CX-200007 Categorical Exclusion Determination Cheniere Marketing, LLC CX(s) Applied: B5.7 Date: 05/25/2016 Location(s): Texas Office(s): Fossil Energy, Natural Gas Regulation May 18, 2016 CX-200008 Categorical Exclusion Determination Flint Hills Resources, LP CX(s) Applied: B5.7 Date: 05/18/2016 Location(s): Texas Office(s): Fossil Energy, Natural Gas Regulation January 28, 2016 CX-200006: Categorical Exclusion Determination

  14. fe0000663 | netl.doe.gov

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

    0663 Recovery Act: Hydrogen Energy California Project: Commercial Demonstration of Advanced IGCC with Full Carbon Capture Email Page email Print This Page print Performer: Hydrogen Energy California LLC (HECA) FE0000663.jpg Website: Hydrogen Energy California LLC (HECA) Award Number: FE0000663 Project Duration: 10/1/2009 - 11/1/2018 Total Award Value: $4,028,136,691.001 DOE Share: $408,000,000.00 Performer Share: $3,620,136,691.00 Technology Area: Clean Coal Power Initiative (CCPI) Key

  15. fe0002650 | netl.doe.gov

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

    2650 Recovery Act: Texas Clean Energy Project Email Page email Print This Page print Performer: Summit Texas Clean Energy LLC FE0002650-1-.jpg Rendering of TCEP Facility Website: Summit Texas Clean Energy LLC Award Number: FE0002650 Project Duration: 02/01/2010 - 07/15/20171 Total Award Value: $1,726,628,229.002 DOE Share: $450,000,000.00 Performer Share: $1,276,628,229.00 Technology Area: Clean Coal Power Initiative (CCPI) Key Technology: Advanced Gasification, Advanced Turbines, Carbon Dioxide

  16. Regulation of brain copper homeostasis by the brain barrier systems: Effects of Fe-overload and Fe-deficiency

    SciTech Connect (OSTI)

    Monnot, Andrew D.; Behl, Mamta; Ho, Sanna; Zheng, Wei

    2011-11-15

    Maintaining brain Cu homeostasis is vital for normal brain function. The role of systemic Fe deficiency (FeD) or overload (FeO) due to metabolic diseases or environmental insults in Cu homeostasis in the cerebrospinal fluid (CSF) and brain tissues remains unknown. This study was designed to investigate how blood-brain barrier (BBB) and blood-SCF barrier (BCB) regulated Cu transport and how FeO or FeD altered brain Cu homeostasis. Rats received an Fe-enriched or Fe-depleted diet for 4 weeks. FeD and FeO treatment resulted in a significant increase (+ 55%) and decrease (- 56%) in CSF Cu levels (p < 0.05), respectively; however, neither treatment had any effect on CSF Fe levels. The FeD, but not FeO, led to significant increases in Cu levels in brain parenchyma and the choroid plexus. In situ brain perfusion studies demonstrated that the rate of Cu transport into the brain parenchyma was significantly faster in FeD rats (+ 92%) and significantly slower (- 53%) in FeO rats than in controls. In vitro two chamber Transwell transepithelial transport studies using primary choroidal epithelial cells revealed a predominant efflux of Cu from the CSF to blood compartment by the BCB. Further ventriculo-cisternal perfusion studies showed that Cu clearance by the choroid plexus in FeD animals was significantly greater than control (p < 0.05). Taken together, our results demonstrate that both the BBB and BCB contribute to maintain a stable Cu homeostasis in the brain and CSF. Cu appears to enter the brain primarily via the BBB and is subsequently removed from the CSF by the BCB. FeD has a more profound effect on brain Cu levels than FeO. FeD increases Cu transport at the brain barriers and prompts Cu overload in the CNS. The BCB plays a key role in removing the excess Cu from the CSF.

  17. 90° magnetic coupling in a NiFe/FeMn/biased NiFe multilayer spin valve component investigated by polarized neutron reflectometry

    SciTech Connect (OSTI)

    Callori, S. J. Bertinshaw, J.; Cortie, D. L.; Cai, J. W. Zhu, T.; Le Brun, A. P.; Klose, F.

    2014-07-21

    We have observed 90° magnetic coupling in a NiFe/FeMn/biased NiFe multilayer system using polarized neutron reflectometry. Magnetometry results show magnetic switching for both the biased and free NiFe layers, the latter of which reverses at low applied fields. As these measurements are only capable of providing information about the total magnetization within a sample, polarized neutron reflectometry was used to investigate the reversal behavior of the NiFe layers individually. Both the non-spin-flip and spin-flip neutron reflectometry signals were tracked around the free NiFe layer hysteresis loop and were used to detail the evolution of the magnetization during reversal. At low magnetic fields near the free NiFe coercive field, a large spin-flip signal was observed, indicating magnetization aligned perpendicular to both the applied field and pinned layer.

  18. SEMI-ANNUAL REPORT - GULF LNG LIQUEFACTION COMPANY, LLC - FE...

    Energy Savers [EERE]

    GULF LNG LIQUEFACTION COMPANY, LLC - FE DKT. NO. 12-47-LNG - ORDER 3104 SEMI-ANNUAL REPORT - GULF LNG LIQUEFACTION COMPANY, LLC - FE DKT. NO. 12-47-LNG - ORDER 3104 PDF icon ...

  19. SEMI-ANNUAL REPORT - GULF LNG LIQUEFACTION COMPANY, LLC - FE...

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

    More Documents & Publications SEMI-ANNUAL REPORTS FOR SOUTHERN LNG COMPANY - FE DKT. NO. 12-54-LNG - ORDER 3106 SEMI-ANNUAL REPORTS FOR GULF COAST LNG EXPORT, LLC - FE DKT. NO. ...

  20. Synergistic Catalysis between Pd and Fe in Gas Phase Hydrodeoxygenatio...

    Office of Scientific and Technical Information (OSTI)

    Synergistic Catalysis between Pd and Fe in Gas Phase Hydrodeoxygenation of m-Cresol Citation Details In-Document Search Title: Synergistic Catalysis between Pd and Fe in Gas Phase ...

  1. Structural Insights into FeMo Cofactor Biosynthesis

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

    a catalytic component and a specific reductase, which, in the standard system, are referred to as the MoFe protein and the Fe protein. At the active site of the...

  2. Hydrocarbon Inhibition and HC Storage Modeling in Fe-Zeolite...

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

    Inhibition and HC Storage Modeling in Fe-Zeolite Catalysts for HD Diesel Engines Hydrocarbon Inhibition and HC Storage Modeling in Fe-Zeolite Catalysts for HD Diesel Engines ...

  3. AgFe Management Ltd | Open Energy Information

    Open Energy Info (EERE)

    AgFe Management Ltd Jump to: navigation, search Name: AgFe Management Ltd Place: London, England, United Kingdom Zip: W11 1QF Product: London-based, Financial Asset Management and...

  4. NNMCAB Board Minutes: March 2009 Santa Fe | Department of Energy

    Office of Environmental Management (EM)

    09 Santa Fe NNMCAB Board Minutes: March 2009 Santa Fe At This Meeting: NNMCAB Written Reports Report on FY'11 EM Budget Report on Community Outreach Update from Liaisons (DOE,...

  5. Listing of DOE/FE Authorizations Issued in 2013 | Department...

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

    FE10-111-LNG 012513 Sabine Pass Liquefaction, LLC Opinion and Order Denying Request for ... Order Granting Blanket Authority to Export Natural Gas to Canada 3215 FE12-170-LNG 0102...

  6. Santa Fe, New Mexico: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    stub. You can help OpenEI by expanding it. Santa Fe is a city in Santa Fe County, New Mexico. It falls under New Mexico's 3rd congressional district.12 Registered Energy...

  7. NNMCAB Board Minutes: November 2005 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the November 30, 2005 Board meeting at Santa Fe Community College Presentation EPA, Impacts of Well Construction Practices on Los Alamos National Laboratory Presentation LANL, Pathways Protection Program-Environmental Stewardship Division on Groundwater Monitoring Issues at LANL, Jean Dewart

  8. Ferromagnetism of Fe3Sn and alloys

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

    Sales, Brian C.; Saparov, Bayrammurad; McGuire, Michael A.; Singh, David J.; Parker, David S.

    2014-11-12

    Hexagonal Fe3Sn has many of the desirable properties for a new permanent magnet phase with a Curie temperature of 725 K, a saturation moment of 1.18 MA/m. and anisotropy energy, K1 of 1.8 MJ/m3. However, contrary to earlier experimental reports, we found both experimentally and theoretically that the easy magnetic axis lies in the hexagonal plane, which is undesirable for a permanent magnet material. One possibility for changing the easy axis direction is through alloying. We used first principles calculations to investigate the effect of elemental substitutions. The calculations showed that substitution on the Sn site has the potential tomore » switch the easy axis direction. Transition metal substitutions with Co or Mn do not have this effect. We attempted synthesis of a number of these alloys and found results in accord with the theoretical predictions for those that were formed. However, the alloys that could be readily made all showed an in-plane easy axis. The electronic structure of Fe3Sn is reported, as are some are magnetic and structural properties for the Fe3Sn2, and Fe5Sn3 compounds, which could be prepared as mm-sized single crystals.« less

  9. NNMCAB Board Minutes: May 2012 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the May 30, 2012 Board meeting at Lodge at Santa Fe Presentation NMED, RCRA The LANL Hazardous Waste Facility Permit and Consent Order, John Kieling Presentation DOE, State of the Laboratory, Ed Worth, Bruch Schappell Presentation DOE, 3706 TRU Waste Campaign Update, Lee Bishop

  10. NNMCAB Board Minutes: March 2006 Santa Fe

    Broader source: Energy.gov [DOE]

    Minutes of the March 29, 2006 Board meeting at Santa Fe Community College Presentation DOE/LANL, Progress and Alternatives for Closure of MDA-L and MDA-G in the Corrective Measures Evaluation, Jim Orban, Dave McInroy

  11. Santa Fe Chamber of Commerce Business Awards Gala

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

    Santa Fe Chamber of Commerce Business Awards Gala Santa Fe Chamber of Commerce Business Awards Gala WHEN: Jun 04, 2015 5:30 PM - 7:30 PM WHERE: Skylight 139 West San Francisco Street, Santa Fe CATEGORY: Community INTERNAL: Calendar Login Event Description An event to recognize some of Santa Fe's best and brightest businesses in the following categories: Business Excellence, Small Business of the Year, Family Friendly Business, Green Business, and Woman Owned Business. Come dressed to impress for

  12. FE FY 2017 BUDGET REQUEST PRESENTATION | Department of Energy

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

    FE FY 2017 BUDGET REQUEST PRESENTATION FE FY 2017 BUDGET REQUEST PRESENTATION FY 2017 budget presentation for the Office of Fossil Energy, including funding requests for programs under Fossil Energy Research and Development and Petroleum Reserves. FY17_Budget_Presentation.pdf (954.07 KB) More Documents & Publications FE FY 2015 Budget Request Presentation Fossil Energy FY 2015 Budget in Brief FE FY 2016 BUDGET REQUEST PRESENTATION

  13. 2011 Annual Planning Summary for Fossil Energy (FE)

    Broader source: Energy.gov [DOE]

    The ongoing and projected Environmental Assessments and Environmental Impact Statements for 2011 and 2012 within Fossil Energy (FE).

  14. Dual role of Fe dopants in enhancing stability and charge transfer...

    Office of Scientific and Technical Information (OSTI)

    Dual role of Fe dopants in enhancing stability and charge transfer in ( Li 0.8 Fe 0.2 ) ... Title: Dual role of Fe dopants in enhancing stability and charge transfer in ( Li 0.8 Fe ...

  15. Multiferroicity and spiral magnetism in FeVO{sub 4} with quenched Fe orbital moments

    SciTech Connect (OSTI)

    Daoud-Aladine, A.; Chapon, L. C.; Kundys, B.; Martin, C.; Simon, C.; Radaelli, P. G.; Brown, P. J.

    2009-12-01

    FeVO{sub 4} has been studied by heat capacity, magnetic susceptibility, electric polarization and single-crystal neutron-diffraction experiments. The triclinic crystal structure is made of S-shaped clusters of six Fe{sup 3+} ions, linked by VO{sub 4}{sup 3-} groups. Two long-range magnetic ordering transitions occur at T{sub N1}=22 K and T{sub N2}=15 K. Both magnetic structures are incommensurate and below T{sub N2}, FeVO{sub 4} becomes weakly ferroelectric coincidentally with the loss of the collinearity of the magnetic structure in a very similar fashion than in the classical TbMnO{sub 3} multiferroic material. However we argue that the symmetry considerations and the mechanisms invoked to explain these properties in TbMnO{sub 3} do not straightforwardly apply to FeVO{sub 4}. First, the magnetic structures, even the collinear structure, are all acentric so that ferroelectricity in FeVO{sub 4} is not correlated with the fact magnetic ordering is breaking inversion symmetry. Regarding the mechanism, FeVO{sub 4} has quenched orbital moments that questions the exact role of the spin-orbit interactions.

  16. Corrosion performance of Fe-Cr-Al and Fe aluminide alloys in complex gas environments

    SciTech Connect (OSTI)

    Natesan, K.; Johnson, R.N.

    1995-05-01

    Alumina-forming structural alloys can offer superior resistance to corrosion in the presence of sulfur-containing environments, which are prevalent in coal-fired fossil energy systems. Further, Fe aluminides are being developed for use as structural materials and/or cladding alloys in these systems. Extensive development has been in progress on Fe{sub 3}Al-based alloys to improve their engineering ductility. In addition, surface coatings of Fe aluminide are being developed to impart corrosion resistance to structural alloys. This paper describes results from an ongoing program that is evaluating the corrosion performance of alumina-forming structural alloys, Fe-Al and Fe aluminide bulk alloys, and Fe aluminide coatings in environments typical of coal-gasification and combustion atmospheres. Experiments were conducted at 650-1000{degrees}C in simulated oxygen/sulfur gas mixtures. Other aspects of the program are corrosion evaluation of the aluminides in the presence of HCl-containing gases. Results are used to establish threshold Al levels in the alloys for development of protective alumina scales and to determine the modes of corrosion degradation that occur in the materials when they are exposed to S/Cl-containing gaseous environments.

  17. Slide 1

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

    3 rd Ultra-Deepwater Advisory Committee Meeting NETL Office, Sugar Land, TX Tuesday, September 17, 2013 RPSEA Administered Cost Share Research Overview: Ultra-Deepwater Program rpsea.org James Pappas, P.E. Vice President, Ultra-Deepwater Programs jpappas@rpsea.org (281) 690-5511 rpsea.org 2 Outline o Current UDW Program Status o Technical Accomplishments FY 2013 * Accomplishments * Significant Findings * Safety & Environment Impact o Plan Forward * 2012 Solicitation - Selection Progress *

  18. Interface characterization of epitaxial Fe/MgO/Fe magnetic tunnel junctions

    SciTech Connect (OSTI)

    Wang, Shouguo; Ward, R. C. C.; Zhang, Xiaoguang; Kohn, A.; Ma, Q. L.; Zhang, J.; Liu, H. F.; Han, Prof. X. F.

    2012-01-01

    Following predictions by first-principles theory of huge tunnel magnetoresistance (TMR) effect in epitaxial Fe/MgO/Fe magnetic tunnel junctions (MTJs), measured magnetoresistance (MR) ratio about 200% at room temperature (RT) have been reported in MgO-based epitaxial MTJs. Recently, MR ratio of about 600% has been reported at RT in MgO-based amorphous MTJs with core structure of CoFeB/MgO/CoFeB grown by magnetron sputtering with amorphous CoFeB layers. The sputtered CoFeB/MgO/CoFeB MTJs shows a great potential application in spintronic devices. Although epitaxial structure will probably not be used in devices, it remains an excellent model system to compare theoretical calculations with experimental results and to enhance our understanding of the spin dependent tunneling. Both theoretical calculations and experimental results clearly indicate that the interfacial structure plays a crucial role on coherent tunneling across single crystalMgO barrier, especially in epitaxial MgO-based MTJs grown by molecular beam epitaxy (MBE). Surface X-ray diffraction, Auger electron spectroscopy, X-ray absorption spectra, and X-ray magnetic circular dichroism have been used for interface characterization. However, no consistent viewpoint has been reached, and this is still an open issue. In this article, recent studies on the interface characterization in MgO-based epitaxial MTJs will be introduced, with a focus on research by X-ray photoelectron spectroscopy, high resolution transmission electron microscopy, and spin dependent tunneling spectroscopy.

  19. Comprehensive Fe-ligand vibration identification in {FeNO}6 Hemes

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

    Li, Jianfeng; Peng, Qian; Oliver, Allen G.; Alp, E. Ercan; Hu, Michael Y.; Zhao, Jiyong; Sage, J. Timothy; Scheidt, W. Robert

    2014-12-09

    Oriented single-crystal nuclear resonance vibrational spectroscopy (NRVS) has been used to obtain all iron vibrations in two {FeNO}6 porphyrinate complexes, five-coordinate [Fe(OEP)(NO)]ClO4 and six-coordinate [Fe(OEP)(2-MeHIm)(NO)]ClO4. A new crystal structure was required for measurements of [Fe(OEP)(2-MeHIm)(NO)]ClO4, and the new structure is reported herein. Single crystals of both complexes were oriented to be either parallel or perpendicular to the porphyrin plane and/or axial imidazole ligand plane. Thus, the FeNO bending and stretching modes can now be unambiguously assigned; the pattern of shifts in frequency as a function of coordination number can also be determined. The pattern is quite distinct from those foundmore » for CO or {FeNO}7 heme species. This is the result of unchanging Fe–NNO bonding interactions in the {FeNO}6 species, in distinct contrast to the other diatomic ligand species. DFT calculations were also used to obtain detailed predictions of vibrational modes. Predictions were consistent with the intensity and character found in the experimental spectra. The NRVS data allow the assignment and observation of the challenging to obtain Fe–Im stretch in six-coordinate heme derivatives. Furthermore, NRVS data for this and related six-coordinate hemes with the diatomic ligands CO, NO, and O2 reveal a strong correlation between the Fe–Im stretch and Fe–NIm bond distance that is detailed for the first time.« less

  20. Fe-implanted 6H-SiC: Direct evidence of Fe{sub 3}Si nanoparticles observed by atom probe tomography and {sup 57}Fe Mssbauer spectroscopy

    SciTech Connect (OSTI)

    Diallo, M. L.; Fnidiki, A. Lard, R.; Cuvilly, F.; Blum, I.; Lechevallier, L.; Debelle, A.; Thom, L.; Viret, M.; Marteau, M.; Eyidi, D.; Declmy, A.

    2015-05-14

    In order to understand ferromagnetic ordering in SiC-based diluted magnetic semiconductors, Fe-implanted 6H-SiC subsequently annealed was studied by Atom Probe Tomography, {sup 57}Fe Mssbauer spectroscopy and SQUID magnetometry. Thanks to its 3D imaging capabilities at the atomic scale, Atom Probe Tomography appears as the most suitable technique to investigate the Fe distribution in the 6H-SiC host semiconductor and to evidence secondary phases. This study definitely evidences the formation of Fe{sub 3}Si nano-sized clusters after annealing. These clusters are unambiguously responsible for the main part of the magnetic properties observed in the annealed samples.

  1. FE Petroleum Reserves News | Department of Energy

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

    Petroleum Reserves News FE Petroleum Reserves News RSS April 9, 2015 Contracts Awarded to Repurchase Oil for the Strategic Petroleum Reserve The U. S. Department of Energy announced the award of contracts for delivery of crude oil to the Strategic Petroleum Reserve. BP Products North America, Inc., will deliver 2,197,500 barrels and Noble Americas will deliver 2,000,000 barrels to the Reserve's Bryan Mound site in Freeport, Texas. Deliveries are expected to be completed by July 31, 2015.

  2. fe0013565-UOregon | netl.doe.gov

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

    Hydrate Evolution in Response to Ongoing Environmental Shifts Last Reviewed 12/2/2015 DE-FE0013565 Goal The project goal is to create models that will be used to improve forecasts of slope stability and pockmark development, which could prevent disruptions of hydrate reserves and possible release of hydrates into the atmosphere. Performers University of Oregon, Eugene, OR 97403-5219 Background Natural gas hydrate reservoirs are dynamic systems that evolve gradually but can also decompose

  3. fe0013590-PSU | netl.doe.gov

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

    Continuous, Regional Methane Emissions Estimates in Northern Pennsylvania Gas Fields Using Atmospheric Inversions Last Reviewed 6/13/2016 DE-FE0013590 Goal The goal of this project is to quantify fugitive and total emissions of methane from the Marcellus gas production region of north-central Pennsylvania, with an emphasis on detecting changes in emissions over time caused by changing gas production activity. Performers The Pennsylvania State University (Penn State), University Park, PA

  4. fe0013689-WVU | netl.doe.gov

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

    Assessing Fugitive Methane Emissions Using Natural Gas Engines in Unconventional Resource Development Last Reviewed 6/14/2016 DE-FE0013689 Goal The project goal is to create an inventory of diesel engines, their use, and their emissions during unconventional well development. The first project objective is to analyze the benefits of operating these or similar engines on dual fuel or dedicated natural gas to determine regulated and non-regulated emissions and fuel cost reductions. The next

  5. fe0013902-groundmetrics | netl.doe.gov

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

    Evaluation of Deep Subsurface Resistivity Imaging for Hydrofracture Monitoring Last Reviewed 6/14/2016 DE-FE0013902 Goal The goal of this project is to quantify how well an in-situ measurement of bulk electrical resistivity using the new method of Depth to Surface Electromagnetic (DSEM) imaging can be related to the changes in rock properties and fluid propagation that occur as a result of hydraulic fracturing. Performer GroundMetrics, Inc. (GMI), San Diego, CA, 92123 Collaborators Global

  6. fe0013919-UTAustin | netl.doe.gov

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

    METHANE HYDRATE PROJECTS Mechanisms for Methane Transport and Hydrate Accumulation in Coarse-Grained Reservoirs Last Reviewed 6/13/2016 DE-FE0013919 Goal The project goal is to evaluate whether the transport of methane, and the specific mechanism by which it is transported, are the primary controls on the development of persistent, massive hydrate accumulations in sediments below the seabed. The dissolved methane flux and time required to develop the accumulations observed at Walker Ridge Block

  7. fe0014144-Oceanit | netl.doe.gov

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

    EXPLORATION AND PRODUCTION TECHNOLOGIES "Nanite" for Better Well-Bore Integrity and Zonal Isolation Last Reviewed 6/14/2016 DE-FE0014144 Goal The project goal is to demonstrate how real-time sensing of Nanite(tm) can improve long-term wellbore integrity and zonal isolation in shale gas and applicable oil and gas operations. Nanite is a cementitious material that contains a proprietary formulation of functionalized nanomaterial additive to transform conventional cement into a smart

  8. fe0022898-usgs | netl.doe.gov

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

    Alaska Natural Gas Hydrate Production Testing: Test Site Selection, Characterization, and Testing Operations Last Reviewed 5/25/2016 DE-FE0022898 Goal The primary goal of this project is to provide geologic and geophysical technical support to identify and characterize gas hydrate production test sites on the Alaska North Slope. Performer U.S. Geological Survey (USGS) - Denver, CO Background This Interagency Agreement is intended to support the U.S. Department of Energy (DOE) and its research

  9. fe0024271-utaustin | netl.doe.gov

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

    Fracture Diagnostics Using Low Frequency Electromagnetic Induction and Electrically Conductive Proppants Last Reviewed 5/4/16 DE-FE0024271 Goal The project goal is to develop a new Low Frequency Electromagnetic Induction method, which has the potential to estimate not only the propped length, height, and orientation of hydraulic fractures but also the vertical distribution of proppant within the fracture. The proposed low frequency electromagnetic induction tool can be used to detect far-field

  10. fe0024292-gti | netl.doe.gov

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

    Resources - Field Labs Hydraulic Fracturing Test Site (HFTS) Last Reviewed 5/11/2016 DE-FE0024292 Goal This project is to conduct a field-based hydraulic fracturing research program for horizontal shale wells with the objectives of reducing and minimizing potential environmental impacts, demonstrating safe and reliable operations, and improving the efficiency of hydraulic fracturing. The research will advance our understanding of the hydraulic fracturing process in shale reservoirs, and thus,

  11. fe0024296-msu | netl.doe.gov

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

    Resources Methods to Enhance Wellbore Cement Integrity with Microbially-Induced Calcite Precipitation (MICP) Last Reviewed 5/4/2016 DE-FE0024296 Goal The goal of this project is to develop improved methods for sealing compromised wellbore cement in leaking natural gas and oil wells, thereby reducing the risk of unwanted upward gas migration. Integrated laboratory testing, simulation modeling, and field testing will be conducted to achieve this goal. Performer Montana State University (MSU),

  12. fe0024297-WVU | netl.doe.gov

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

    Resources - Field Laboratories Marcellus Shale Energy and Environment Laboratory (MSEEL) Last Reviewed May 2016 DE-FE0024297 Goal The goal of the Marcellus Shale Energy and Environment Laboratory (MSEEL) is to provide a long-term field site to develop and validate new knowledge and technology to improve recovery efficiency and minimize environmental implications of unconventional resource development. Performer West Virginia University, Northeast Natural Energy and The Ohio State University

  13. fe0024311-ttu | netl.doe.gov

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

    Maximize Liquid Oil Production from Shale Oil and Gas Condensate Reservoirs by Cyclic Gas Injection Last Reviewed 5/20/2016 DE-FE0024311 Goal The project goal is to evaluate the oil recovery potential of cyclic gas injection. Detailed project objectives include: Studying the dominant mechanisms of gas injection in shale reservoirs (e.g., pressure maintenance or miscibility) Finding the most effective mode of gas injection in shale oil and gas condensate reservoirs (e.g., gas flooding or

  14. fe0024357-osu | netl.doe.gov

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

    Resources - Field Labs Utica Shale Energy and Environment Laboratory (USEEL) Last Reviewed 5/27/2016 DE-FE0024357 Goal The goal of this project is to develop and maintain a field research facility in the heart of the Utica Shale play that will provide a platform for environmental and geotechnical studies before, during, and after unconventional oil and gas (UOG) development. Performers The Ohio State University (OSU), Columbus, OH West Virginia University, Morgantown, WV Environmental Friendly

  15. La Fonda on the Plaza --- Santa Fe

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

    La Fonda on the Plaza --- Santa Fe March 8 to 11, 2015 Quantum and Dirac Materials for Energy Applications Conference Welcome to the Quantum and Dirac Materials for Energy Applications Conference (QDM-15). This conference follows the Competing Orders in Functional Materials and their Applications Workshop, which was held at Nordita in Stockholm, Sweden in June of 2013. The Quantum and Dirac Materials for Energy Applications Conference is hosted by the Institute for Materials Science (IMS) at Los

  16. The Office of Fossil Energy's (FE) Clean

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

    Office of Fossil Energy's (FE) Clean Coal Technology Demonstration Program (1986-1993) laid the foundation for effective technologies now in use that have helped significantly lower emissions of sulfur dioxide (SO 2 ), nitrogen oxides (NO x ) and airborne particulates (PM 10 ). The program forged cost-sharing partnerships between the U.S. Department of Energy, industry, universities and technology suppliers and users. The U.S. General Accounting Office said the program demonstrated "how the

  17. FE0003616_PSU | netl.doe.gov

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

    Stripper Well Consortium Last Reviewed 12/3/2015 DE-FE0003616 Goal The goal of the Stripper Well Consortium (SWC) [external site] is to enhance the ability of the domestic production industry to keep stripper wells producing at economic production rates in an environmentally safe manner, maximizing the recovery of domestic hydrocarbon resources. Performer The Pennsylvania State University (Energy Institute), University Park, PA 16823 Background The United States has more oil and gas wells than

  18. FE0005961_UIllinois | netl.doe.gov

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

    RVA: 3-D Visualization and Analysis Software to Support Management of Unconventional Oil and Gas Resources Last Reviewed 12/2/2015 DE-FE0005961 Goal This project will produce a state-of-the-art 3-D visualization and analysis software package targeted for improving development of oil and gas resources. The software [RVA (Reservoir Visualization and Analysis)] will display data, models, and reservoir simulation results and have the ability to jointly visualize and query data from geologic models

  19. FE00880_RBDMS | netl.doe.gov

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

    Risk Based Data Management System (RBDMS) and Cost Effective Regulatory Approaches (CERA) Related to Hydraulic Fracturing and Geologic Sequestration of Carbon Dioxide (CO2) Last Reviewed 6/13/2016 DE-FE0000880 Goal The goal of this project is to enhance the RBDMS by adding new components relevant to environmental topics associated with hydraulic fracturing (HF), and by management of myriad data regarding oil and natural gas well histories, brine disposal, production, enhanced recovery,

  20. International science conferences in Santa Fe

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

    International science conferences International science conferences in Santa Fe The conference are 2012 International Conference on Defects in Insulating Materials and Computer Simulation of Radiation Effects in Solids. June 22, 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 energy sources, to plasma physics and new materials. Los

  1. VERY LATE PHOTOMETRY OF SN 2011fe

    SciTech Connect (OSTI)

    Kerzendorf, W. E. [Department of Astronomy and Astrophysics, University of Toronto, 50 Saint George Street, Toronto, ON M5S 3H4 (Canada); Taubenberger, S.; Seitenzahl, I. R.; Ruiter, A. J., E-mail: wkerzendorf@gmail.com [Max-Planck-Institut fr Astrophysik, Karl-Schwarzschild-Strae 1, D-85748 Garching (Germany)

    2014-12-01

    The Type Ia supernova SN 2011fe is one of the closest supernovae of the past decades. Due to its proximity and low dust extinction, this object provides a very rare opportunity to study the extremely late time evolution (>900 days) of thermonuclear supernovae. In this Letter, we present our photometric data of SN 2011fe taken at an unprecedented late epoch of ?930 days with GMOS-N mounted on the Gemini North telescope (g=23.43 0.28, r=24.14 0.14, i=23.91 0.18, and z=23.90 0.17) to study the energy production and retention in the ejecta of SN 2011fe. Together with previous measurements by other groups, our result suggests that the optical supernova light curve can still be explained by the full thermalization of the decay positrons of {sup 56}Co. This is in spite of theoretical predicted effects (e.g., infrared catastrophe, positron escape, and dust) that advocate a substantial energy redistribution and/or loss via various processes that result in a more rapid dimming at these very late epochs.

  2. Incorporation of oxidized uranium into Fe (hydr)oxides during Fe(II) catalyzed remineralization

    SciTech Connect (OSTI)

    Nico, Peter S.; Stewart, Brandy D.; Fendorf, Scott

    2009-07-01

    The form of solid phase U after Fe(II) induced anaerobic remineralization of ferrihydrite in the presence of aqueous and absorbed U(VI) was investigated under both abiotic batch and biotic flow conditions. Experiments were conducted with synthetic ground waters containing 0.168 mM U(VI), 3.8 mM carbonate, and 3.0 mM Ca{sup 2+}. In spite of the high solubility of U(VI) under these conditions, appreciable removal of U(VI) from solution was observed in both the abiotic and biotic systems. The majority of the removed U was determined to be substituted as oxidized U (U(VI) or U(V)) into the octahedral position of the goethite and magnetite formed during ferrihydrite remineralization. It is estimated that between 3% and 6% of octahedral Fe(III) centers in the new Fe minerals were occupied by U(VI). This site specific substitution is distinct from the non-specific U co-precipitation processes in which uranyl compounds, e.g. uranyl hydroxide or carbonate, are entrapped with newly formed Fe oxides. The prevalence of site specific U incorporation under both abiotic and biotic conditions and the fact that the produced solids were shown to be resistant to both extraction (30 mM KHCO{sub 3}) and oxidation (air for 5 days) suggest the potential importance of sequestration in Fe oxides as a stable and immobile form of U in the environment.

  3. 57Fe Mössbauer study of Lu2Fe3Si5 iron silicide superconductor

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

    Ma, Xiaoming; Ran, Sheng; Pang, Hua; Li, Fashen; Canfield, Paul C.; Bud'ko, Sergey L.

    2015-03-28

    With the advent of Fe–As based superconductivity it has become important to study how superconductivity manifests itself in details of 57Fe Mössbauer spectroscopy of conventional, Fe-bearing superconductors. The iron-based superconductor Lu2Fe3Si5 has been studied by 57Fe Mössbauer spectroscopy over the temperature range from 4.4 K to room temperature with particular attention to the region close to the superconducting transition temperature (Tc=6.1 K). Furthermore, consistent with the two crystallographic sites for Fe in this structure, the observed spectra appear to have a pattern consisting of two doublets over the whole temperature range. The value of Debye temperature was estimated from temperaturemore » dependence of the isomer shift and the total spectral area and compared with the specific heat capacity data. As a result, neither abnormal behavior of the hyperfine parameters at or near Tc, nor phonon softening were observed.« less

  4. Proteome of Geobacter sulfurreducens grown with Fe(III) oxide or Fe(III) citrate as the electron acceptor.

    SciTech Connect (OSTI)

    Ding, Y-H R.; Hixson, Kim K.; Aklujkar, Ma; Lipton, Mary S.; Smith, Richard D.; Lovley, Derek R.; Mester, Tunde

    2008-12-01

    e(III) oxides are the most abundant source of reducible Fe(III) by microorganisms in most soils and sediments, yet few studies on the physiology of Fe(III)-reducing microorganisms during growth on Fe(III) oxide have been conducted because of the technical difficulties in working with cell growth and harvest in the presence of Fe(III) oxides. Geobacter sulfurreducens is a representative of the Geobacter species that predominate in a variety of subsurface environments in which Fe(III) oxide is important. In order to better understand the physiology of Geobacter species during growth on Fe(III) oxide, the proteome of G. sulfurreducens grown on Fe(III) oxide was compared with the proteome of cells grown with soluble Fe(III) citrate. Two-dimensional polyacrylamide gel electrophoresis (2-D PAGE) revealed 19 proteins that were more abundant during growth on Fe(III) oxide than on soluble Fe(III). These included proteins related to protein synthesis, electron transfer and energy production, oxidative stress, protein folding, outer membrane proteins, nitrogen metabolism and hypothetical proteins. Further analysis of the proteome with the accurate mass and time (AMT) tag method revealed additional proteins associated with growth on Fe(III) oxide. These included the outer-membrane c-type cytochrome, OmcS and OmcG, which genetic studies have suggested are required for Fe(III) oxide reduction. Furthermore, several other cytochromes, as yet unstudied, were detected to be significantly up regulated during growth on Fe(III) oxide and other proteins of unknown function were more abundant during growth on Fe(III) oxide than on soluble Fe(III). PilA, the structural protein for pili, which is required for Fe(III) oxide reduction, and other pilin-associated proteins were also more abundant during growth on Fe(III) oxide. Confirmation of the differential expression of proteins known to be important in Fe(III) oxide reduction was observed, and an additional number of previously

  5. Interfacial electronic transport phenomena in single crystalline Fe-MgO-Fe thin barrier junctions

    SciTech Connect (OSTI)

    Gangineni, R. B.; Negulescu, B.; Baraduc, C.; Gaudin, G.

    2014-05-05

    Spin filtering effects in nano-pillars of Fe-MgO-Fe single crystalline magnetic tunnel junctions are explored with two different sample architectures and thin MgO barriers (thickness: 3–8 monolayers). The two architectures, with different growth and annealing conditions of the bottom electrode, allow tuning the quality of the bottom Fe/MgO interface. As a result, an interfacial resonance states (IRS) is observed or not depending on this interface quality. The IRS contribution, observed by spin polarized tunnel spectroscopy, is analyzed as a function of the MgO barrier thickness. Our experimental findings agree with theoretical predictions concerning the symmetry of the low energy (0.2 eV) interfacial resonance states: a mixture of Δ{sub 1}-like and Δ{sub 5}-like symmetries.

  6. On the transition rates of the Fe X and Fe XIV corona lines

    SciTech Connect (OSTI)

    Trabert, E

    2003-11-20

    Despite a considerable scatter of the theoretical predictions of the M1/E2 transition rate of the ''red iron line'' (FeX) in the solar corona, there is disagreement of all the results with the single measurement that used an electrostatic ion trap. Employing a heavy-ion storage ring for measuring the same transition in isoelectronic ions of Co, Ni, and Cu, the situation has been clarified, and a new data point for FeX can be determined by extrapolation. This result agrees with the basic atomic structure prediction for the line strength in combination with the experimental transition energy. For the ''green iron line'' (FeXIV), a recent measurement with an electron beam ion trap has resolved similar discrepancies.

  7. Stellar and laboratory XUV/EUV line ratios in Fe XVIII and Fe XIX

    SciTech Connect (OSTI)

    Traebert, E.; Beiersdorfer, P.; Clementson, J.

    2012-05-25

    A so-called XUV excess has been suspected with the relative fluxes of Fe XVIII and Fe XIX lines observed in the XUV and EUV ranges of the spectrum of the star Capella as observed by the Chandra spacecraft, even after correction for interstellar absorption. This excess becomes apparent in the comparison of the observations with simulations of stellar spectra obtained using collisional-radiative models that employ, for example, the Atomic Plasma Emission Code (APEC) or the Flexible Atomic Code (FAC). We have addressed this problem by laboratory studies using the Livermore electron beam ion trap (EBIT).

  8. [?/Fe]ABUNDANCES OF FOUR OUTER M31 HALO STARS

    SciTech Connect (OSTI)

    Vargas, Luis C.; Geha, Marla; Tollerud, Erik J. [Department of Astronomy, Yale University, 260 Whitney Avenue, New Haven, CT 06511 (United States); Gilbert, Karoline M. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Kirby, Evan N. [California Institute of Technology, 1200 East California Boulevard, MC 249-17, Pasadena, CA 91125 (United States); Guhathakurta, Puragra, E-mail: luis.vargas@yale.edu [UCO/Lick Observatory and Department of Astronomy and Astrophysics, University of California, 1156 High Street, Santa Cruz, CA 95064 (United States)

    2014-12-10

    We present alpha element to iron abundance ratios, [?/Fe], for four stars in the outer stellar halo of the Andromeda Galaxy (M31). The stars were identified as high-likelihood field halo stars by Gilbert et al. and lie at projected distances between 70 and 140 kpc from M31's center. These are the first alpha abundances measured for a halo star in a galaxy beyond the Milky Way. The stars range in metallicity between [Fe/H] = 2.2 and [Fe/H] = 1.4. The sample's average [?/Fe] ratio is +0.20 0.20. The best-fit average value is elevated above solar, which is consistent with rapid chemical enrichment from Type II supernovae. The mean [?/Fe] ratio of our M31 outer halo sample agrees (within the uncertainties) with that of Milky Way inner/outer halo stars that have a comparable range of [Fe/H].

  9. FE Clean Coal News | Department of Energy

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

    Clean Coal News FE Clean Coal News RSS June 3, 2016 U.S., Saudi Arabia Announce International Collaboration on Supercritical CO2 Tech Development The U. S. and the Kingdom of Saudi Arabia have announced the intention to establish an international consortium to promote the research, development, and demonstration (RD&D) of supercritical carbon dioxide (sCO2) power cycles. December 2, 2015 DOE Selects Projects To Enhance Its Research into Recovery of Rare Earth Elements from Coal and Coal

  10. fe0014055-CMU | netl.doe.gov

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

    Measurements and Modeling to Quantify Emissions of Methane and VOCs from Shale Gas Operations Last Reviewed 6/13/2016 DE-FE0014055 Goal The goals of this project are to determine the leakage rates of methane and ozone-forming volatile organic carbons (VOCs) and the emission rates of air toxics from Marcellus Shale gas activities at a process level. Methane emissions in the Marcellus Shale region shall be differentiated between "newer" sources associated with shale gas development and

  11. fe0014066-battelle | netl.doe.gov

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

    Development and Validation of an Acid Mine Drainage Treatment Process for Source Water Last Reviewed 12/11/2015 DE-FE00 14066 Goal The goal of this project is to research and optimize a Floatation Liquid-Liquid Extraction (FLLX) water treatment system to process and repurpose water of lesser quality, i.e., acid mine drainage (AMD water) for use in hydraulic fracturing (HF) operations and assess the feasibility of using the system byproducts for flowback water processing. The objectives of this

  12. fe0023495-usgs | netl.doe.gov

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

    Natural Gas Hydrates in Permafrost and Marine Settings: Resources, Properties, and Environmental Issues Last Reviewed 5/27/2016 DE-FE0023495 Goal The objective of this DOE-USGS Interagency Agreement (IA) is to provide world-class expertise and research in support of the goals of the 2005 Energy Act for National Methane Hydrates R&D, the DOE-led U.S. interagency roadmap for gas hydrates research, and elements of the USGS mission related to energy resources, global climate, and geohazards.

  13. fe0024293-geglobal | netl.doe.gov

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

    nXis Well Integrity Inspection in Unconventional Wells Last Reviewed 6/13/2016 DE-FE0024293 Goal The goal of this project is to develop a novel well-integrity inspection system capable of providing enhanced information about the flaw structure and topology of conventional and unconventional gas-filled wells. This will be achieved by developing a novel combined X-ray/neutron backscatter imaging device, suitably sized for operation in well bores. Performers GE Global Inc., Niskayuna, NY Starfire

  14. fe0024314-swri | netl.doe.gov

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

    Development and Field Testing Novel Natural Gas Surface Process Equipment for Replacement of Water as Primary Hydraulic Fracturing Fluid Last Reviewed 6/3/2016 DE-FE0024314 Goal The goal of this project is to develop and field test the use of readily available natural gas collected at the wellhead as a primary fracturing fluid. The work proposes to develop, validate, and demonstrate affordable non-water-based and non CO2-based stimulation technologies, which can be used instead of, or in tandem

  15. FE0005889_UTPermian | netl.doe.gov

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

    Case Studies of the ROZ CO2 Flood and the Combined ROZ/MPZ CO2 Flood at the Goldsmith Landreth Unit, Ector County, Texas Last Reviewed 6/3/2016 DE-FE0005889 Goal The goal of the project is to assist in optimizing the technical and economic performance of a residual oil zone (ROZ) carbon dioxide (CO2) flood and transfer the knowledge to other operators. The objectives are to (1) characterize the main pay zone (MPZ) and ROZ within the ROZ pilot area, (2) conduct laboratory analyses and reservoir

  16. FE0005902-UTA | netl.doe.gov

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

    Novel CO2 Foam Concepts and Injection Schemes for Improving CO2 Sweep Efficiency in Sandstone and Carbonate Hydrocarbon Formations Last Reviewed 6/12/2015 DE-FE0005902 Goal The goal of this project is to develop mobility control agents using surfactants injected with carbon dioxide (CO2) rather than with water for CO2 enhanced oil recovery (CO2-EOR) in heterogeneous carbonate and sandstone reservoirs. Objectives are to (1) reduce CO2 mobility in CO2 swept portions of the reservoir-but not at the

  17. FE0005917-UTA | netl.doe.gov

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

    Use of Engineered Nanoparticle-stabilized CO2 Foams to Improve Volumetric Sweep of CO2 EOR Processes Last Reviewed 6/26/2014 DE-FE0005917 Goal The goal of this project is to develop a new carbon dioxide injection enhanced oil recovery (CO2-EOR) process using engineered nanoparticles with optimized surface coatings that has better volumetric sweep efficiency and a wider application range than conventional CO2-EOR processes. The objectives are to (1) identify the characteristics of the optimal

  18. FE0005958-Impact | netl.doe.gov

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

    Improved Mobility Control in CO2 Enhanced Recovery Using SPI Gels Last Reviewed 12/8/2014 DE-FE0005958 Goal The goal of this project is to demonstrate the potential of using Silica Polymer Initiator-Carbon dioxide (SPI-CO2) gel systems for profile modifications in CO2 injection/ production wells. The objective is to advance SPI-CO2Enhanced Oil Recovery (EOR) gel technology by performing multiple small-scale field injectivity tests using both 'Huff & Puff' and conventional pattern flood

  19. FE0005979-NMIMT | netl.doe.gov

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

    Nanoparticle-stabilized CO2 Foam for CO2-EOR Application Last Reviewed 5/26/2015 DE-FE0005979 Goal The goal of this project is to develop and evaluate, through coreflood tests at reservoir conditions, a nanoparticle-stabilized carbon dioxide (CO2) foam system that can improve CO2 sweep efficiency in CO2 enhanced oil recovery (EOR) and minimize particle retention in the reservoir. Performer New Mexico Institute of Mining and Technology/Petroleum Recovery Research Center, Socorro, NM 87801-4681

  20. FE0006015-NITEC | netl.doe.gov

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

    Full-featured, User Friendly CO2 EOR and Sequestration Planning Software Last Reviewed 12/30/2013 DE-FE0006015 Goal The goal of this project is to develop a full-featured, user friendly, carbon dioxide (CO2) enhanced oil recovery (EOR) and sequestration planning software system that will allow small- to mid-sized field operators to design and optimize CO2 EOR and sequestration operations in a short time frame. The objective is to develop a tool that includes all the significant physical and

  1. First endowed position created at Santa Fe Community College

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

    First endowed position created at Santa Fe Community College Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue: September 1, 2016 all issues All Issues » submit First endowed position created at Santa Fe Community College Early Childhood Center for Excellence director's position now funded. July 6, 2016 Santa Fe Community College's Early Childhood Center of Excellence Director Dr. Jennifer Duran-Sallee (left) gives a tour of the Kids

  2. Melting and thermal expansion in the Fe-FeO system at high pressure

    SciTech Connect (OSTI)

    Seagle, C. T.; Heinz, D. L.; Campbell, A. J.; Prakapenka, V. B.; Wanless, S. T.

    2015-02-26

    Melting in the Fe–FeO system was investigated at pressures up to 93 GPa using synchrotron X-ray diffraction (XRD) and a laser heated diamond anvil cell (DAC). The criteria for melting were the disappearance of reflections associated with one of the end-member phases upon raising the temperature above the eutectic and the reappearance of those reflections on dropping the temperature below the eutectic. The Fe–FeO system is a simple eutectic at 50 GPa and remains eutectic to at least 93 GPa. The eutectic temperature was bound at several pressure points between 19 and 93 GPa, and in some cases the liquidus temperature was also determined. The eutectic temperature rises rapidly with pressure closely following the melting curve of pure Fe. A detailed phase diagram at 50 GPa is presented; the eutectic temperature is 2500 ± 150 K and the eutectic composition is bound between 7.6 ± 1.0 and 9.5 ± 1.0 wt.% O. The coefficient of thermal expansion of FeO is a strong function of volume and decreases with pressure according to a simple power law.

  3. Exponentially decaying magnetic coupling in sputtered thin film FeNi/Cu/FeCo trilayers

    SciTech Connect (OSTI)

    Wei, Yajun Akansel, Serkan; Thersleff, Thomas; Brucas, Rimantas; Lansaker, Pia; Leifer, Klaus; Svedlindh, Peter; Harward, Ian; Celinski, Zbigniew; Ranjbar, Mojtaba; Dumas, Randy K.; Jana, Somnath; Pogoryelov, Yevgen; Karis, Olof; Åkerman, Johan

    2015-01-26

    Magnetic coupling in trilayer films of FeNi/Cu/FeCo deposited on Si/SiO{sub 2} substrates have been studied. While the thicknesses of the FeNi and FeCo layers were kept constant at 100 Å, the thickness of the Cu spacer was varied from 5 to 50 Å. Both hysteresis loop and ferromagnetic resonance results indicate that all films are ferromagnetically coupled. Micromagnetic simulations well reproduce the ferromagnetic resonance mode positions measured by experiments, enabling the extraction of the coupling constants. Films with a thin Cu spacer are found to be strongly coupled, with an effective coupling constant of 3 erg/cm{sup 2} for the sample with a 5 Å Cu spacer. The strong coupling strength is qualitatively understood within the framework of a combined effect of Ruderman-Kittel-Kasuya-Yosida and pinhole coupling, which is evidenced by transmission electron microscopy analysis. The magnetic coupling constant surprisingly decreases exponentially with increasing Cu spacer thickness, without showing an oscillatory thickness dependence. This is partially connected to the substantial interfacial roughness that washes away the oscillation. The results have implications on the design of multilayers for spintronic applications.

  4. Phase coexistence in the Fe-Nd system

    SciTech Connect (OSTI)

    Cabral, F.A.O.; Gama, S. , Caixa Postal 6165, 13081 Campinas, Sao Paulo )

    1989-01-01

    The authors discuss phase coexistence in the Fe-Nd binary system investigated by metallography, x-ray diffractometry, electron microprobe analysis, and differential thermal analysis. The technique of diffusion couples also has been used. The Fe/sub 17/Nd/sub 2/ compound is peritectically formed at 1185{sup 0}C and the eutectic reaction is L {yields} Fe/sub 17/Nd/sub 2/ + Nd/sup */, occurring at 670{sup 0}C; the Fe/sub 2/Nd phase was not found. A double thermal arrest is observed at the eutectic temperature and its origin is not well understood yet.

  5. Nanoimprint-lithography Patterned Epitaxial Fe Nanowire Arrays...

    Office of Scientific and Technical Information (OSTI)

    epitaxial Fe nanowire arrays on MgO(001) substrates by nanoimprint lithography with a direct metallization of epitaxial materials through a metallic mask, which avoided the...

  6. Engineering Multimetallic FePt-based nanowires for enhancing...

    Office of Scientific and Technical Information (OSTI)

    and methanol oxidation reactions Citation Details In-Document Search Title: Engineering Multimetallic FePt-based nanowires for enhancing oxygen reduction and methanol oxidation ...

  7. Microbial Lithotrophic Oxidation of Structural Fe(II) in Biotite...

    Office of Scientific and Technical Information (OSTI)

    of the growth yield of lithoautotrophic circumneutral-pH Fe(II)-oxidizing bacteria. ... Subject: 54 ENVIRONMENTAL SCIENCES; AQUIFERS; BACTERIA; BIOTITE; IRON; MICA; ...

  8. Fe Atomic Data for Non-equilibrium Ionization Plasmas Eriksen...

    Office of Scientific and Technical Information (OSTI)

    Fe Atomic Data for Non-equilibrium Ionization Plasmas Eriksen, Kristoffer A. Los Alamos National Laboratory; Fontes, Christopher J. Los Alamos National Laboratory; Colgan,...

  9. Santa Fe Oversize/Overweight Permit Application | Open Energy...

    Open Energy Info (EERE)

    Reference LibraryAdd to library Legal Document- Permit ApplicationPermit Application: Santa Fe OversizeOverweight Permit ApplicationLegal Published NA Year Signed or Took...

  10. Santa Fe New Mexican: For cybersecurity, in quantum encryption...

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

    For cybersecurity, in quantum encryption we trust Santa Fe New Mexican: For cybersecurity, in quantum encryption we trust Los Alamos physicists developed a quantum random number...

  11. Thermal conductivity and diffusion-mediated localization in Fe1...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Thermal conductivity and diffusion-mediated localization in Fe1-xCrx alloys from first principles Citation Details In-Document Search Title: Thermal conductivity ...

  12. Electromagnetic absorption properties of graphene/Fe nanocomposites...

    Office of Scientific and Technical Information (OSTI)

    were prepared by a facile and green method. * 10 nm Fe nanoparticles were ... Country of input: International Atomic Energy Agency (IAEA) Country of Publication: ...

  13. Building operator certification offered in Santa Fe next year

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

    The coursework is provided by the Santa Fe Community College's Center of Excellence in Green Building and Energy Efficiency. January 1, 2013 dummy image Read our archives. Contacts ...

  14. Los Alamos National Security invests in Santa Fe Community College...

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

    Los Alamos National Security invests in Santa Fe Community College Foundation The new center is an educational and training facility for alternative energy and green jobs. July 16, ...

  15. Local structure of Fe in Fe-doped misfit-layered calcium cobaltite: An X-ray absorption spectroscopy study

    SciTech Connect (OSTI)

    Prasoetsopha, Natkrita; Pinitsoontorn, Supree; Bootchanont, Atipong; Kidkhunthod, Pinit; Srepusharawoot, Pornjuk; Kamwanna, Teerasak; Amornkitbamrung, Vittaya; Kurosaki, Ken; Yamanaka, Shinsuke

    2013-08-15

    Polycrystalline Ca{sub 3}Co{sub 4?x}Fe{sub x}O{sub 9+?} ceramics (x=0, 0.01, 0.03, 0.05) were fabricated using a simple thermal hydro-decomposition method and a spark plasma sintering technique. Thermoelectric property measurements showed that increasing Fe concentration resulted in a decrease in electrical resistivity, thermopower and thermal conductivity, leading to an improvement in the dimensionless figure-of-merit, >35% for x=0.05 at 1073 K. An X-ray absorption spectroscopy technique was used to investigate the local structure of Fe ions in the Ca{sub 3}Co{sub 4?x}Fe{sub x}O{sub 9+?} structure for the first time. By fitting data from the extended X-ray absorption fine structure (EXAFS) spectra and analyzing the X-ray absorption near-edge structure (XANES) spectra incorporated with first principle simulation, it was shown that Fe was substituted for Co in the the Ca{sub 2}CoO{sub 3} (rocksalt, RS) layer rather than in the CoO{sub 2} layer. Variation in the thermoelectric properties as a function of Fe concentration was attributed to charge transfer between the CoO{sub 2} and the RS layers. The origin of the preferential Fe substitution site was investigated considering the ionic radii of Co and Fe and the total energy of the system. - Graphical abstract: The Fe K-edge XANES spectra of: (a) experimental result in comparison to the simulated spectra when Fe atoms were substituted in the RS layer; (b) with magnetic moment; (c) without magnetic moment, and in the CoO{sub 2} layer; (d) with magnetic moment and (e) without magnetic moment. Highlights: Synthesis, structural studies, and thermoelectric properties of Ca{sub 3}Co{sub 4?x}Fe{sub x}O{sub 9+?}. Direct evidence for the local structure of the Fe ions in the Ca{sub 3}Co{sub 4?x}Fe{sub x}O{sub 9+?} using XAS analysis. EXAFS and XANES analysis showed that Fe was likely to be situated in the RS layer structure. Changes in TE property with Fe content was due to charge transfer between the CoO{sub 2} and

  16. Spin and charge transport in double-junction Fe/MgO/GaAs/MgO/Fe heterostructures

    SciTech Connect (OSTI)

    Wolski, S. Szczepa?ski, T.; Dugaev, V. K.; Barna?, J.; Landgraf, B.; Slobodskyy, T.; Hansen, W.

    2015-01-28

    We present theoretical and experimental results on tunneling current in single Fe/MgO/GaAs and double Fe/MgO/GaAs/MgO/Fe tunnel junctions. The charge and spin currents are calculated as a function of external voltage for different sets of parameters characterizing the semiconducting GaAs layer. Transport characteristics of a single Fe/MgO/GaAs junction reveal typical diode as well as spin diode features. The results of numerical calculations are compared with current-voltage characteristics measured experimentally for double tunnel junction structures, and a satisfactory agreement of the theoretical and experimental results has been achieved.

  17. Photoinduced reduction of surface states in Fe:ZnO

    SciTech Connect (OSTI)

    Knut, R. Palmgren, P.; Karis, O.; Lagerqvist, U.; Pohl, A.; Pal, P.; Svedlindh, P.

    2015-05-28

    We report on the electronic structure of nano-crystalline Fe:ZnO, which has recently been found to be an efficient photocatalyst. Using resonant photoemission spectroscopy, we determine the binding energy of Fe 3d states corresponding to different valencies and coordination of the Fe atoms. The photo-activity of ZnO reduces Fe from 3+ to 2+ in the surface region of the nano-crystalline material due to the formation of oxygen vacancies. Electronic states corresponding to low-spin Fe{sup 2+} are observed and attributed to crystal field modification at the surface. These states are potentially important for the photocatalytic sensitivity to visible light due to their location deep in the ZnO bandgap. X-ray absorption and x-ray photoemission spectroscopy suggest that Fe is only homogeneously distributed for concentrations up to 3%. Increased concentrations does not result in a higher concentration of Fe ions in the surface region. This is limiting the photocatalytic functionality of ZnO, where the most efficient Fe doping concentration has been shown to be 1%-4%.

  18. F.E. Warren Air Force Base Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    F.E. Warren Air Force Base Wind Farm Jump to: navigation, search Name F.E. Warren Air Force Base Wind Farm Facility F.E. Warren Air Force Base Sector Wind energy Facility Type...

  19. Delocalized Molecular Orbitals of the [6Fe-6S] Cluster of the...

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

    Delocalized Molecular Orbitals of the 6Fe-6S Cluster of the FeFe-Hydrogenase Hydrogenases catalyze the stoichiometrically simple (H2 2 H+ + 2 e-), but energetically difficult...

  20. Bulk amorphous steels based on Fe alloys

    DOE Patents [OSTI]

    Lu, ZhaoPing; Liu, Chain T.

    2006-05-30

    A bulk amorphous alloy has the approximate composition: Fe.sub.(100-a-b-c-d-e)Y.sub.aMn.sub.bT.sub.cM.sub.dX.sub.e wherein: T includes at least one of the group consisting of: Ni, Cu, Cr and Co; M includes at least one of the group consisting of W, Mo, Nb, Ta, Al and Ti; X includes at least one of the group consisting of Co, Ni and Cr; a is an atomic percentage, and a<5; b is an atomic percentage, and b.ltoreq.25; c is an atomic percentage, and c.ltoreq.25; d is an atomic percentage, and d.ltoreq.25; and e is an atomic percentage, and 5.ltoreq.e.ltoreq.30.

  1. Stability of precipitate phases in Fe-rich Fe-Cr-Ni-Mo alloys

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

    Yang, Ying; Tan, Lizhen; Busby, Jeremy T

    2015-01-01

    Understanding the stability of precipitate phases in the Fe-rich Fe-Cr-Ni-Mo alloys is critical to the alloy design and application of Mo-containing Austenitic steels. Coupled with thermodynamic modeling, stability of the and phases in two Fe-Cr-Ni-Mo alloys were investigated at 1000, 850 and 700 C for different annealing time. The morphologies, compositions and crystal structures of the matrix and precipitate phases were carefully examined by Scanning Electron Microscopy, Electron Probe Microanalysis, X-ray diffraction and Transmission Electron Microscopy. Two key findings resulted from this work. One is that the phase is stable at high temperature and transformed into the phase at lowmoretemperature. The other is that both the and phases have large solubilites of Cr, Mo and Ni, among which the Mo solubility has a major role on the relative stability of the precipitate phases. The developed thermodynamic models were then applied to evaluating the Mo effect on the stability of precipitate phases in AISI 316 and NF709 alloys.less

  2. Electron transfer activation of a second water channel for proton transport in [FeFe]-hydrogenase

    SciTech Connect (OSTI)

    Sode, Olaseni; Voth, Gregory A.

    2014-12-14

    Hydrogenase enzymes are important because they can reversibly catalyze the production of molecular hydrogen. Proton transport mechanisms have been previously studied in residue pathways that lead to the active site of the enzyme via residues Cys299 and Ser319. The importance of this pathway and these residues has been previously exhibited through site-specific mutations, which were shown to interrupt the enzyme activity. It has been shown recently that a separate water channel (WC2) is coupled with electron transport to the active site of the [FeFe]-hydrogenase. The water-mediated proton transport mechanisms of the enzyme in different electronic states have been studied using the multistate empirical valence bond reactive molecular dynamics method, in order to understand any role WC2 may have in facilitating the residue pathway in bringing an additional proton to the enzyme active site. In a single electronic state A{sup 2?}, a water wire was formed through which protons can be transported with a low free energy barrier. The remaining electronic states were shown, however, to be highly unfavorable to proton transport in WC2. A double amino acid substitution is predicted to obstruct proton transport in electronic state A{sup 2-} by closing a cavity that could otherwise fill with water near the proximal Fe of the active site.

  3. Thermal stability of intermetallic phases in Fe-rich Fe-Cr-Ni-Mo alloys

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

    Yang, Ying; Tan, Lizhen; Busby, Jeremy T.

    2015-06-12

    Understanding the stability of precipitate phases in the Fe-rich Fe-Cr-Ni-Mo alloys is critical to the alloy design and application of Mo-containing Austenitic steels. Coupled with thermodynamic modeling, stability of the chi and Laves phases in two Fe-Cr-Ni-Mo alloys were investigated at 1000, 850 and 700 °C for different annealing time. The morphologies, compositions and crystal structures of the matrix and precipitate phases were carefully examined by Scanning Electron Microscopy, Electron Probe Microanalysis, X-ray diffraction and Transmission Electron Microscopy. The two key findings resulted from this work. One is that the chi phase is stable at high temperature and transformed intomore » the Laves phase at low temperature. The other is that both the chi and Laves phases have large solubilites of Cr, Mo and Ni, among which the Mo solubility has a major role on the relative stability of the precipitate phases. The developed thermodynamic models were then applied to evaluating the Mo effect on the stability of precipitate phases in AISI 316 and NF709 alloys.« less

  4. Thermal stability of intermetallic phases in Fe-rich Fe-Cr-Ni-Mo alloys

    SciTech Connect (OSTI)

    Yang, Ying; Tan, Lizhen; Busby, Jeremy T.

    2015-06-12

    Understanding the stability of precipitate phases in the Fe-rich Fe-Cr-Ni-Mo alloys is critical to the alloy design and application of Mo-containing Austenitic steels. Coupled with thermodynamic modeling, stability of the chi and Laves phases in two Fe-Cr-Ni-Mo alloys were investigated at 1000, 850 and 700 °C for different annealing time. The morphologies, compositions and crystal structures of the matrix and precipitate phases were carefully examined by Scanning Electron Microscopy, Electron Probe Microanalysis, X-ray diffraction and Transmission Electron Microscopy. The two key findings resulted from this work. One is that the chi phase is stable at high temperature and transformed into the Laves phase at low temperature. The other is that both the chi and Laves phases have large solubilites of Cr, Mo and Ni, among which the Mo solubility has a major role on the relative stability of the precipitate phases. The developed thermodynamic models were then applied to evaluating the Mo effect on the stability of precipitate phases in AISI 316 and NF709 alloys.

  5. Thermal stability of intermetallic phases in Fe-rich Fe-Cr-Ni-Mo alloys

    SciTech Connect (OSTI)

    Yang, Ying; Tan, Lizhen; Busby, Jeremy T.

    2015-06-12

    Understanding the stability of precipitate phases in the Fe-rich Fe-Cr-Ni-Mo alloys is critical to the alloy design and application of Mo-containing Austenitic steels. Coupled with thermodynamic modeling, stability of the chi and Laves phases in two Fe-Cr-Ni-Mo alloys were investigated at 1000, 850 and 700 C for different annealing time. The morphologies, compositions and crystal structures of the matrix and precipitate phases were carefully examined by Scanning Electron Microscopy, Electron Probe Microanalysis, X-ray diffraction and Transmission Electron Microscopy. The two key findings resulted from this work. One is that the chi phase is stable at high temperature and transformed into the Laves phase at low temperature. The other is that both the chi and Laves phases have large solubilites of Cr, Mo and Ni, among which the Mo solubility has a major role on the relative stability of the precipitate phases. The developed thermodynamic models were then applied to evaluating the Mo effect on the stability of precipitate phases in AISI 316 and NF709 alloys.

  6. Thermodynamic Properties of α-Fe2O3 and Fe3O4 Nanoparticles

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

    Spencer, Elinor C.; Ross, Nancy L.; Olsen, Rebecca E.; Huang, Baiyu; Kolesnikov, Alexander I.; Woodfield, Brian F.

    2015-04-21

    Here we comprehansively assessed the thermodynamic properties of hydrated α-Fe2O3 (hematite) and Fe3O4 (magnetite) nanoparticles. In addition to 9 nm Fe3O4, three α-e2O3nanoparticles samples of different sizes (11, 14, and 25 nm) and bulk α-e2O3 have been evaluated by inelastic neutron scattering methods. The contribution of the two-level magnetic spin flip transition to the heat capacity of the α-e2O3 particles has been determined. The isochoric heat capacity of the water confined on the surface of these two types of iron oxide particles have been calculated from their INS spectra, and is affected by the chemical composition of the underlying particle.more » Furthermore, the heat capacity and dynamics of the particle hydration layers appear to be influenced by a complex array of factors including particle size, water coverage, and possibly the magnetic state of the particle itself.« less

  7. In situ observation of defect annihilation in Kr ion-irradiated bulk Fe/amorphous-Fe 2 Zr nanocomposite alloy

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

    Yu, K. Y.; Fan, Z.; Chen, Y.; Song, M.; Liu, Y.; Wang, H.; Kirk, M. A.; Li, M.; Zhang, X.

    2014-08-26

    Enhanced irradiation tolerance in crystalline multilayers has received significant attention lately. However, little is known on the irradiation response of crystal/amorphous nanolayers. We report on in situ Kr ion irradiation studies of a bulk Fe96Zr4 nanocomposite alloy. Irradiation resulted in amorphization of Fe2Zr and formed crystal/amorphous nanolayers. α-Fe layers exhibited drastically lower defect density and size than those in large α-Fe grains. In situ video revealed that mobile dislocation loops in α-Fe layers were confined by the crystal/amorphous interfaces and kept migrating to annihilate other defects. This study provides new insights on the design of irradiation-tolerant crystal/amorphous nanocomposites.

  8. The Effects of Hydrocarbons on NOx Reduction over Fe-based SCR...

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

    and NOx reduction over a commercial Fe-zeolite SCR catalyst to understand catalyst ... Hydrocarbon Inhibition and HC Storage Modeling in Fe-Zeolite Catalysts for HD Diesel ...

  9. Magnetism in Na-filled Fe-based skutterudites

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

    Xing, Guangzong; Fan, Xiaofeng; Zheng, Weitao; Ma, Yanming; Shi, Hongliang; Singh, David J.

    2015-06-01

    The interplay of superconductivity and magnetism is a subject of ongoing interest, stimulated most recently by the discovery of Fe-based superconductivity and the recognition that spin-fluctuations near a magnetic quantum critical point may provide an explanation for the superconductivity and the order parameter. We investigate magnetism in the Na filled Fe-based skutterudites using first principles calculations. NaFe4Sb12 is a known ferromagnet near a quantum critical point. We find a ferromagnetic metallic state for this compound driven by a Stoner type instability, consistent with prior work. In accord with prior work, the magnetization is overestimated, as expected for a material nearmore » an itinerant ferromagnetic quantum critical point. NaFe4P12 also shows a ferromagnetic instability at the density functional level, but this instability is much weaker than that of NaFe4Sb12, possibly placing it on the paramagnetic side of the quantum critical point. NaFe4As12 shows intermediate behavior. We also present results for skutterudite FeSb3, which is a metastable phase that has been reported in thin film form.« less

  10. Magnetism in Na-filled Fe-based skutterudites

    SciTech Connect (OSTI)

    Xing, Guangzong; Fan, Xiaofeng; Zheng, Weitao; Ma, Yanming; Shi, Hongliang; Singh, David J.

    2015-06-01

    The interplay of superconductivity and magnetism is a subject of ongoing interest, stimulated most recently by the discovery of Fe-based superconductivity and the recognition that spin-fluctuations near a magnetic quantum critical point may provide an explanation for the superconductivity and the order parameter. We investigate magnetism in the Na filled Fe-based skutterudites using first principles calculations. NaFe4Sb12 is a known ferromagnet near a quantum critical point. We find a ferromagnetic metallic state for this compound driven by a Stoner type instability, consistent with prior work. In accord with prior work, the magnetization is overestimated, as expected for a material near an itinerant ferromagnetic quantum critical point. NaFe4P12 also shows a ferromagnetic instability at the density functional level, but this instability is much weaker than that of NaFe4Sb12, possibly placing it on the paramagnetic side of the quantum critical point. NaFe4As12 shows intermediate behavior. We also present results for skutterudite FeSb3, which is a metastable phase that has been reported in thin film form.

  11. Accelerated decarburization of Fe-C metal alloys

    DOE Patents [OSTI]

    Pal, Uday B.; Sadoway, Donald R.

    1997-01-01

    A process for improving the rate of metal production and FeO utilization in a steelmaking process or a process combining iron-making and steelmaking in a single reactor that uses or generates Fe-C metal alloy droplets submerged in an FeO-containing slag. The process involves discharging a charge build-up (electron accumulation) in the slag at the slag-metal alloy interface by means of an electron conductor connected between the metal alloy droplets and a gas at a gas-slag interface, said gas having an oxygen partial pressure of at least about 0.01 atmosphere.

  12. Accelerated decarburization of Fe-C metal alloys

    DOE Patents [OSTI]

    Pal, U.B.; Sadoway, D.R.

    1997-05-27

    A process is described for improving the rate of metal production and FeO utilization in a steelmaking process or a process combining iron-making and steelmaking in a single reactor that uses or generates Fe-C metal alloy droplets submerged in an FeO-containing slag. The process involves discharging a charge build-up (electron accumulation) in the slag at the slag-metal alloy interface by means of an electron conductor connected between the metal alloy droplets and a gas at a gas-slag interface, said gas having an oxygen partial pressure of at least about 0.01 atmosphere. 2 figs.

  13. FE Welcomes 2016 Mickey Leland Energy Fellowship Interns | Department of

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

    Energy FE Welcomes 2016 Mickey Leland Energy Fellowship Interns FE Welcomes 2016 Mickey Leland Energy Fellowship Interns June 14, 2016 - 9:25am Addthis 2016 Mickey Leland Energy Fellowship interns participating in a discussion during the June 13 kick-off event in Washington, D.C. 2016 Mickey Leland Energy Fellowship interns participating in a discussion during the June 13 kick-off event in Washington, D.C. The Office of Fossil Energy's (FE) Mickey Leland Energy Fellowship (MLEF) kicked off

  14. Itinerant magnetism in metallic CuFe2Ge2

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

    Shanavas, K. V.; Singh, David J.; He, Ruihua

    2015-03-25

    Theoretical calculations are performed to understand the electronic structure and magnetic properties of CuFe2Ge2. The band structure reveals large electron density N(EF) at the Fermi level suggesting a strong itinerant character of magnetism. The Fermi surface is dominated by two dimensional sheet like structures, with potentially strong nesting between them. The magnetic ground state appears to be ferromagnetic along a and antiferromagnetic in other directions. The results show that CuFe2Ge2 is an antiferromagnetic metal, with similarities to the Fe-based superconductors; such as magnetism with substantial itinerant character and coupling between magnetic order and electrons at the Fermi energy.

  15. Magnetic and structural properties of ferromagnetic Fe5PB2 and Fe5SiB2 and effects of Co and Mn substitutions

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

    McGuire, Michael A.; Parker, David S.

    2015-10-22

    Crystallographic and magnetic properties of Fe5PB2, Fe4CoPB2, Fe4MnPB2, Fe5SiB2, Fe4CoSiB2, and Fe4MnSiB2 are reported. All adopt the tetragonal Cr5B3 structure-type and are ferromagnetic at room temperature with easy axis of magnetization along the c-axis. The spin reorientation in Fe5SiB2 is observed as an anomaly in the magnetization near 170 K, and is suppressed by substitution of Co or Mn for Fe. The silicides are found to generally have larger magnetic moments than the phosphides, but the data suggests smaller magnetic anisotropy in the silicides. Cobalt substitution reduces the Curie temperatures by more than 100 K and ordered magnetic moments bymore » 16-20%, while manganese substitution has a much smaller effect. This suggests Mn moments align ferromagnetically with the Fe and that Co does not have an ordered moment in these structures. Anisotropic thermal expansion is observed in Fe5PB2 and Fe5SiB2, with negative thermal expansion seen along the c-axis of Fe5SiB2. First principles calculations of the magnetic properties of Fe5SiB2 and Fe4MnSiB2 are reported. The results, including the magnetic moment and anisotropy, and are in good agreement with experiment.« less

  16. Synthesis and properties of titanomagnetite (Fe3-xTixO4) nanoparticles: A tunable solid-state Fe(II/III) redox system

    SciTech Connect (OSTI)

    Pearce, Carolyn I.; Qafoku, Odeta; Liu, Juan; Arenholz, Elke; Heald, Steve M.; Kukkadapu, Ravi K.; Gorski, Christopher A.; Henderson, C. Michael B.; Rosso, Kevin M.

    2012-12-01

    Titanomagnetite (Fe3-xTixO4) nanoparticles were synthesized by room temperature aqueous precipitation, in which Ti(IV) replaces Fe(III) and is charge compensated by conversion of Fe(III) to Fe(II) in the unit cell. A comprehensive suite of tools was used to probe composition, structure, and magnetic properties down to site-occupancy level, emphasizing distribution and accessibility of Fe(II) as a function of x. Synthesis of nanoparticles in the range 0 ? x ? 0.6 was attempted; Ti, total Fe and Fe(II) content were verified by chemical analysis. TEM indicated homogeneous spherical 10 12 nm particles. ?-XRD and Mssbauer spectroscopy on anoxic aqueous suspensions verified the inverse spinel structure and Ti(IV) incorporation in the unit cell up to x ? 0.38, based on Fe(II)/Fe(III) ratio deduced from the unit cell edge and Mssbauer spectra. Nanoparticles with a higher value of x possessed a minor amorphous secondary Fe(II)/Ti(IV) phase. XANES/EXAFS indicated Ti(IV) incorporation in the octahedral sublattice (B-site) and proportional increases in Fe(II)/Fe(III) ratio. XA/XMCD indicate these increases arise from increasing B-site Fe(II), and that these charge-balancing equivalents segregate to those B-sites near particle surfaces. Dissolution studies showed that this segregation persists after release of Fe(II) into solution, in amounts systematically proportional to x and thus the Fe(II)/Fe(III) ratio. A mechanistic reaction model was developed entailing mobile B-site Fe(II) supplying a highly interactive surface phase that undergoes interfacial electron transfer with oxidants in solution, sustained by outward Fe(II) migration from particle interiors and concurrent inward migration of charge-balancing cationic vacancies in a ratio of 3:1.

  17. Interstitial loop transformations in FeCr

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

    Béland, Laurent Karim; Osetsky, Yuri N.; Stoller, Roger E.; Xu, Haixuan

    2015-03-27

    Here, we improve the Self-Evolving Atomistic Kinetic Monte Carlo (SEAKMC) algorithm by integrating the Activation Relaxation Technique nouveau (ARTn), a powerful open-ended saddle-point search method, into the algorithm. We use it to investigate the reaction of 37-interstitial 1/2[1 1 1] and 1/2[View the MathML source] loops in FeCr at 10 at.% Cr. They transform into 1/2[1 1 1], 1/2[View the MathML source], [1 0 0] and [0 1 0] 74-interstitial clusters with an overall barrier of 0.85 eV. We find that Cr decoration locally inhibits the rotation of crowdions, which dictates the final loop orientation. Moreover, the final loop orientationmore » depends on the details of the Cr decoration. Generally, a region of a given orientation is favored if Cr near its interface with a region of another orientation is able to inhibit reorientation at this interface more than the Cr present at the other interfaces. Also, we find that substitutional Cr atoms can diffuse from energetically unfavorable to energetically favorable sites within the interlocked 37-interstitial loops conformation with barriers of less than 0.35 eV.« less

  18. ELECTRON-ION RECOMBINATION OF Fe XII FORMING Fe XI: LABORATORY MEASUREMENTS AND THEORETICAL CALCULATIONS

    SciTech Connect (OSTI)

    Novotny, O.; Hahn, M.; Lestinsky, M.; Savin, D. W.; Badnell, N. R.; Bernhardt, D.; Mueller, A.; Schippers, S.; Grieser, M.; Krantz, C.; Repnow, R.; Wolf, A.

    2012-07-01

    We have measured electron-ion recombination for Fe XII forming Fe XI using a merged-beam configuration at the heavy-ion storage ring TSR located at the Max Planck Institute for Nuclear Physics in Heidelberg, Germany. The measured merged-beam recombination rate coefficient (MBRRC) for collision energies from 0 to 1500 eV is presented. This work uses a new method for determining the absolute MBRRC based on a comparison of the ion beam decay rate with and without the electron beam on. For energies below 75 eV, the spectrum is dominated by dielectronic recombination (DR) resonances associated with 3s {yields} 3p and 3p {yields} 3d core excitations. At higher energies, we observe contributions from 3 {yields} N' and 2 {yields} N' core excitation DR. We compare our experimental results to state-of-the-art multi-configuration Breit-Pauli (MCBP) calculations and find significant differences, both in resonance energies and strengths. We have extracted the DR contributions from the measured MBRRC data and transformed them into a plasma recombination rate coefficient (PRRC) for temperatures in the range of 10{sup 3}-10{sup 7} K. We show that the previously recommended DR data for Fe XII significantly underestimate the PRRC at temperatures relevant for both photoionized plasmas (PPs) and collisionally ionized plasmas (CPs). This is contrasted with our MCBP PRRC results, which agree with the experiment to within 30% at PP temperatures and even better at CP temperatures. We find this agreement despite the disagreement shown by the detailed comparison between our MCBP and experimental MBRRC results. Last, we present a simple parameterized form of the experimentally derived PRRC for easy use in astrophysical modeling codes.

  19. DE-FE0012862 | netl.doe.gov

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

    Novel Flow Sheet for Low Energy CO2 Capture Enabled by Biocatalyst Delivery System Project No.: DE-FE0012862 Akermin is conducting laboratory and integrated bench-scale pilot...

  20. fe0013531-Oregon-State | netl.doe.gov

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

    Assessing the Response of Methane Hydrates to Environmental Change at the Svalbad Continental Margin Last Reviewed 1242015 DE-FE0013531 Goal The project goal is to study the...

  1. DE-FE0012829 | netl.doe.gov

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

    Test of a Nanoporous, Super-hydrophobic Membrane Contactor Process for Post-combustion CO2 Capture Project No.: DE-FE0012829 GTI is building a 1 MWe equivalent pilot-scale CO2...

  2. Interdiffusion in nanometric Fe/Ni multilayer films

    SciTech Connect (OSTI)

    Liu, JX; Barmak, K

    2015-03-01

    Fe (3.1 nm)/Ni (3.3 nm)](20) multilayer films were prepared by DC magnetron sputtering onto oxidized Si(100) substrates. The Fe and Ni layers were shown to both be face-centered cubic by x-ray diffraction. Interdiffusion of the Fe and Ni layers in the temperature range of 300-430 degrees C was studied by x-ray reflectivity. From the decay of the integral intensity of the superlattice peak, the activation energy and the pre-exponential term for the effective interdiffusion coefficient were determined as to 1.06 +/- 0.07 eV and 5 x 10(-10) cm(2)/s, respectively. The relevance of the measured interdiffusion coefficient to the laboratory timescale synthesis of L1(0) ordered FeNi as a rare-earth free permanent magnet is discussed. (C) 2015 American Vacuum Society.

  3. FE's Ultra-Deepwater Program focuses on spill prevention, safety...

    Energy Savers [EERE]

    Nearly everyone recognizes that prudent development of domestic oil and natural gas ... Managed by FE's Office of Oil and Natural Gas with the support of NETL, the UDW program's ...

  4. FE FY 2016 BUDGET REQUEST PRESENTATION | Department of Energy

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

    6budgetrollout 2-2-15.pdf More Documents & Publications FE FY 2015 Budget Request Presentation Fossil Energy FY 2013 Budget-in-Brief Fossil Energy FY 2015 Budget in Brief...

  5. SEAONE GULFPORT, LLC- FE DKT NO. 16-22-CGL

    Broader source: Energy.gov [DOE]

    The Office of Fossil Energy (FE) of the Department of Energy (DOE) gives notice of receipt of an application (Application), filed on September 18, 2015, by SeaOne Gulfport, LLC (SeaOne), requesting...

  6. FE Budget-in-Brief FY 2014 | Department of Energy

    Energy Savers [EERE]

    Fossil Energy Budget-in-Brief for FY 2014 (641.19 KB) More Documents & Publications Fossil Energy FY 2015 Budget in Brief Fossil Energy FY 2013 Budget-in-Brief FE FY 2017 BUDGET ...

  7. Santa Fe Springs, California: Energy Resources | Open Energy...

    Open Energy Info (EERE)

    Hide Map This article is a stub. You can help OpenEI by expanding it. Santa Fe Springs is a city in Los Angeles County, California. It falls under California's...

  8. Santa Fe, Texas: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Hide Map This article is a stub. You can help OpenEI by expanding it. Santa Fe is a city in Galveston County, Texas. It falls under Texas's 22nd congressional...

  9. Eldorado at Santa Fe, New Mexico: Energy Resources | Open Energy...

    Open Energy Info (EERE)

    at Santa Fe, New Mexico: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 35.526365, -105.93424 Show Map Loading map... "minzoom":false,"mapping...

  10. Startup Funding Forum on October 18 in Santa Fe

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

    2015-Jan. 2016 all issues All Issues submit Startup Funding Forum on October 18 in Santa Fe Coronado Ventures Forum will present "Early-Stage Fundraising Options for Founders...

  11. Rancho Santa Fe, California: Energy Resources | Open Energy Informatio...

    Open Energy Info (EERE)

    Hide Map This article is a stub. You can help OpenEI by expanding it. Rancho Santa Fe is a census-designated place in San Diego County, California.1 Registered Energy...

  12. Optical Absorption and Spectral Photoconductivity in α-(Fe1...

    Office of Scientific and Technical Information (OSTI)

    The onset of -Fe2O3 photoconductivity can be reduced by nearly 0.5 eV through addition of Cr. Authors: Chamberlin, Sara E. 1 ; Wang, Yong 1 ; Lopata, Kenneth A. 1 ; ...

  13. FE DOCKET NO. 11-59-LNG | Department of Energy

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

    DOCKET NO. 11-59-LNG FE DOCKET NO. 11-59-LNG ORDER NO. 3324 CONDITIONALLY GRANTING LONG-TERM MULTI-CONTRACT AUTHORIZATION TO EXPORT LIQUEFIED NATURAL GAS BY VESSEL FROM THE LAKE ...

  14. American LNG Marketing, LLC- FE Dkt. 16-33-LNG

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Office of Fossil Energy (FE) of the Department of Energy (DOE) gives notice of receipt of an application (Application), filed on March 8, 2016, by American LNG Marketing, LLC, (American LNG) ...

  15. BOSTON GAS COMPANY- FE DKT. 16-50-LNG

    Broader source: Energy.gov [DOE]

    Boston Gas Company (DOE/FE Dkt. No. 16-50-LNG) - The Office of Fossil Energy gives notice of receipt of an Application filed April 11, 2016 by Boston Gas Company d/b/a National Grid (Boston Gas),...

  16. Electrochemical Model of the Fe/V Redox Flow Battery

    SciTech Connect (OSTI)

    Stephenson, David E.; Kim, Soowhan; Chen, Feng; Thomsen, Edwin C.; Viswanathan, Vilayanur V.; Wang, Wei; Sprenkle, Vincent L.

    2012-11-05

    This paper presents a mathematical model for the new Fe/V redox flow battery chemistry. The model is designed to be useful for stack development and cost analysis purposes.

  17. DE-FE0012926 | netl.doe.gov

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

    An Advanced Catalytic Solvent for Lower Cost Post-Combustion CO2 Capture in a Coal-fired Power Plant Project No.: DE-FE0012926 The University of Kentucky is testing an advanced ...

  18. Santa Fe Community College offers new welding program

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

    Santa Fe Community College Offers Welding Program Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue: September 1, 2016 all issues All Issues » submit Santa Fe Community College offers new welding program The new programs are financially supported by the LANS which anticipates an increased need for welders for construction programs scheduled during the next 15 years. January 1, 2013 dummy image Read our archives Contacts Editor Linda

  19. Voltage modulation of propagating spin waves in Fe

    SciTech Connect (OSTI)

    Nawaoka, Kohei; Shiota, Yoichi; Miwa, Shinji; Tamura, Eiiti; Tomita, Hiroyuki; Mizuochi, Norikazu; Shinjo, Teruya; Suzuki, Yoshishige

    2015-05-07

    The effect of a voltage application on propagating spin waves in single-crystalline 5?nm-Fe layer was investigated. Two micro-sized antennas were employed to excite and detect the propagating spin waves. The voltage effect was characterized using AC lock-in technique. As a result, the resonant field of the magnetostatic surface wave in the Fe was clearly modulated by the voltage application. The modulation is attributed to the voltage induced magnetic anisotropy change in ferromagnetic metals.

  20. Los Alamos National Security invests in Santa Fe Community College

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

    invests in Santa Fe Community College Foundation July 16, 2009 College plans Sustainable Technology Center Los Alamos, New Mexico, July 16, 2009-Representatives from Los Alamos National Security, LLC and Los Alamos National Laboratory today are presenting a check for $100,000 to the Santa Fe Community College and its GROW Foundation for the college's planned Sustainable Technologies Center.The new center is an educational and training facility for alternative energy and green jobs that will

  1. Fe Atomic Data for Non-equilibrium Ionization Plasmas (Conference) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Fe Atomic Data for Non-equilibrium Ionization Plasmas Citation Details In-Document Search Title: Fe Atomic Data for Non-equilibrium Ionization Plasmas No abstract prepared. Authors: Eriksen, Kristoffer A. [1] ; Fontes, Christopher J. [1] ; Colgan, James P. [1] ; Zhang, Honglin [1] ; Hungerford, Aimee L. [1] ; Fryer, Christopher L. [1] ; Hughes, John P. [2] ; Smith, Randall K. [3] ; Badenes, Carles [4] + Show Author Affiliations Los Alamos National Laboratory Rutgers

  2. Demonstration of Security Benefits of Renewable Generation at FE Warren Air Force Base

    SciTech Connect (OSTI)

    Warwick, William M.; Myers, Kurt; Seifert, Gary

    2010-12-31

    Report detailing field demonstration of security benefits of renewable generation at FE Warren Air Force Base.

  3. Uranium(VI) reduction by nanoscale zero-valent iron in anoxic batch systems: The role of Fe(II) and Fe(III)

    SciTech Connect (OSTI)

    Yan, Sen; Chen, Yongheng; Xiang, Wu; Bao, Zhengyu; Liu, Chongxuan; Deng, Baolin

    2014-12-01

    The role of Fe(II) and Fe(III) on U(VI) reduction by nanoscale zerovalent iron (nanoFe0) was investigated using two iron chelators 1,10-phenanthroline and triethanolamine (TEA) under a CO2-free anoxic condition. The results showed U(VI) reduction was strongly inhibited by 1,10-phenanthroline and TEA in a pH range from 6.92 to 9.03. For instance, at pH 6.92 the observed U(VI) reduction rates decreased by 80.7% and 82.3% in the presence of 1,10-phenanthroline and TEA, respectively. The inhibition was attributed to the formation of stable complexes between 1,10-phenanthroline and Fe(II) or TEA and Fe(III). In the absence of iron chelators, U(VI) reduction can be enhanced by surface-bound Fe(II) on nanoFe0. Our results suggested that Fe(III) and Fe(II) probably acted as an electron shuttle to mediate the transfer of electrons from nanoFe0 to U(VI), therefore a combined system with Fe(II), Fe(III) and nanoFe0 can facilitate the U(VI) reductive immobilization in the contaminated groundwater.

  4. Tuning the magnetic and structural phase transitions of PrFeAsO via Fe/Ru spin dilution

    SciTech Connect (OSTI)

    Yiu, Yuen; Bonfa, Pietro; Sanna, Samuele; De Renzi, Roberto; Caretta, Pietro; McGuire, Michael A; Huq, Ashfia; Nagler, Stephen E

    2014-01-01

    Neutron diffraction and muon spin relaxation measurements are used to obtain a detailed phase diagram of PrFe1{xRuxAsO. The isoelectronic substitution of Ru for Fe acts eectively as spin dilution, suppressing both the structural and magnetic phase transitions. The temperature, TS, of the tetragonal-orthorhombic structural phase transition decreases gradually as a function of x. Slightly below TS coherent precessions of the muon spin are observed corresponding to static magnetism, possibly re ecting a signicant magneto-elastic coupling in the FeAs layers. Short range order in both the Fe and Pr moments persists for higher levels of x. The static magnetic moments disappear at a concentration coincident with that expected for percolation of the J1 - J2 square lattice model.

  5. All-epitaxial Co{sub 2}FeSi/Ge/Co{sub 2}FeSi trilayers fabricated...

    Office of Scientific and Technical Information (OSTI)

    Ge and Cosub 2FeSi enable to promote the 2D epitaxial growth of Ge up to 5 nm at a ... Country of Publication: United States Language: English Subject: 36 MATERIALS SCIENCE; 71 ...

  6. Mssbauer investigations of hyperfine interactions features of {sup 57}Fe nuclei in BiFeO{sub 3} ferrite

    SciTech Connect (OSTI)

    Sobolev, Alexey, E-mail: salex12@rambler.ru; Presniakov, Igor, E-mail: salex12@rambler.ru; Rusakov, Vyacheslav, E-mail: salex12@rambler.ru; Matsnev, Mikhail; Gorchakov, Dmitry; Glazkova, Iana [Lomonosov Moscow State University, 119991, Moscow (Russian Federation); Belik, Alexey [International Center for Materials Nanoarchitectonics (MANA), National Institute for Material Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044 (Japan)

    2014-10-27

    New results of {sup 57}Fe Mssbauer studies on BiFeO{sub 3} powder sample performed at various temperatures above and below magnetic phase transitions point T{sub N} ? 640K are reported. We have performed self-consistent calculations of the lattice contributions to the EFG tensor, taking into account dipole moments of the O{sup 2?} and Bi{sup 3+} ions. Low-temperature {sup 57}Fe Mssbauer spectra recorded at T < T{sub N} were analyzed assuming an anharmonic cycloidal modulation of the Fe{sup 3+} magnetic moments. The cycloidal modulation of the iron spin was described with the elliptic Jacobi function sn[(4K(m)/?)x,m]. The good fit of the experimental spectra was obtained for the anharmonicity m = 0.44 0.04 (T = 4.9K) resulting from the easy-axis magnetic anisotropy.

  7. Microstructure evolution and magnetic properties of FeB/Pt multilayers and FeBPt composite films

    SciTech Connect (OSTI)

    Su, Hao; Schwarm, Samuel C.; Gupta, Subhadra; Martens, Richard L.

    2014-05-07

    Comparisons of microstructural evolution and magnetic properties were made of a FeB12/Pt10/[FeB1.2/Pt1]{sub 15}/Ta5 nm multilayered structure with a FeB12/Pt10/FeBPt33/Ta5 nm co-deposited structure. The Ta capping layer was used to protect the films from oxidation. Both these samples were sputtered in the same planetary deposition system onto thermally oxidized silicon substrates. They both represent layer-by-layer deposition, with the second type of deposition having atomically fine layers, more than an order of magnitude finer than the first type. The samples were annealed at a range of times, temperatures, and vacuum conditions. X-ray diffraction (XRD), transmission electron microscopy, and alternating gradient magnetometry were employed to characterize the structural and magnetic properties, respectively. Significant differences were observed between the two types of structures. A maximum coercivity of 8.9 kOe was seen for the atomically fine multilayer, about 10% more than that for the coarse multilayer. XRD analysis confirmed that both the coarse and fine multilayers were in the L1{sub 0} phase after annealing. Our results indicate that the co-deposited film, which is really composed of atomically fine multilayers, is superior to the coarse multilayered FeB/Pt for the formation of L1{sub 0}-phase FePt.

  8. Tunneling magnetoresistance in Fe{sub 3}Si/MgO/Fe{sub 3}Si(001) magnetic tunnel junctions

    SciTech Connect (OSTI)

    Tao, L. L.; Liang, S. H.; Liu, D. P.; Wei, H. X.; Han, X. F.; Wang, Jian

    2014-04-28

    We present a theoretical study of the tunneling magnetoresistance (TMR) and spin-polarized transport in Fe{sub 3}Si/MgO/Fe{sub 3}Si(001) magnetic tunnel junction (MTJ). It is found that the spin-polarized conductance and bias-dependent TMR ratios are rather sensitive to the structure of Fe{sub 3}Si electrode. From the symmetry analysis of the band structures, we found that there is no spin-polarized Δ{sub 1} symmetry bands crossing the Fermi level for the cubic Fe{sub 3}Si. In contrast, the tetragonal Fe{sub 3}Si driven by in-plane strain reveals half-metal nature in terms of Δ{sub 1} state. The giant TMR ratios are predicted for both MTJs with cubic and tetragonal Fe{sub 3}Si electrodes under zero bias. However, the giant TMR ratio resulting from interface resonant transmission for the former decreases rapidly with the bias. For the latter, the giant TMR ratio can maintain up to larger bias due to coherent transmission through the majority-spin Δ{sub 1} channel.

  9. Campbell penetration depth in Fe-based superconductors

    SciTech Connect (OSTI)

    Prommapan, Plegchart

    2011-08-15

    A 'true' critical current density, j{sub c}, as opposite to commonly measured relaxed persistent (Bean) current, j{sub B}, was extracted from the Campbell penetration depth, {lambda}{sub c}(T,H) measured in single crystals of LiFeAs, and optimally electron-doped Ba(Fe{sub 0.954}Ni{sub 0.046}){sub 2}As{sub 2} (FeNi122). In LiFeAs, the effective pinning potential is nonparabolic, which follows from the magnetic field - dependent Labusch parameter {alpha}. At the equilibrium (upon field - cooling), {alpha}(H) is non-monotonic, but it is monotonic at a finite gradient of the vortex density. This behavior leads to a faster magnetic relaxation at the lower fields and provides a natural dynamic explanation for the fishtail (second peak) effect. We also find the evidence for strong pinning at the lower fields.The inferred field dependence of the pinning potential is consistent with the evolution from strong pinning, through collective pinning, and eventually to a disordered vortex lattice. The value of j{sub c}(2 K) {approx_equal} 1.22 x 10{sup 6} A/cm{sup 2} provide an upper estimate of the current carrying capability of LiFeAs. Overall, vortex behavior of almost isotropic, fully-gapped LiFeAs is very similar to highly anisotropic d-wave cuprate superconductors, the similarity that requires further studies in order to understand unconventional superconductivity in cuprates and pnictides. In addition to LiFeAs, we also report the magnetic penetration depth in BaFe{sub 2}As{sub 2} based superconductors including irradiation of FeNi122. In unirradiated FeNi122, the maximum critical current value is, j{sub c}(2K) {approx_equal} 3.3 x 10{sup 6} A/cm{sup 2}. The magnetic-dependent feature was observed near the transition temperature in FeTe{sub 0.53}Se{sub 0.47} and irradiated FeNi122. Because of this feature, further studies are required in order to properly calibrate the Campbell penetration depth. Finally, we detected the crossing between the magnetic penetration depth and

  10. In-field {sup 57}Fe Mössbauer spectroscopy below spin-flop transition in powdered troilite (FeS) mineral

    SciTech Connect (OSTI)

    Cuda, Jan Tucek, Jiri; Filip, Jan; Malina, Ondrej; Krizek, Michal; Zboril, Radek

    2014-10-27

    Powdered troilite (FeS), extracted from the Cape York IIIA octahedrite meteorite, was investigated employing in-field {sup 57}Fe Mössbauer spectroscopy. The study identified a typical behavior of polycrystalline antiferromagnetic material under external magnetic fields. The in-field evolution of the {sup 57}Fe Mössbauer spectra showed that the spin-flop transition in the FeS system occurs at a field higher than 5 T.

  11. Effect of Ag addition to L1{sub 0} FePt and L1{sub 0} FePd films grown by molecular beam epitaxy

    SciTech Connect (OSTI)

    Tokuoka, Y.; Seto, Y.; Kato, T.; Iwata, S.

    2014-05-07

    L1{sub 0} ordered FePt-Ag (5?nm) and FePd-Ag (5?nm) films were grown on MgO (001) substrate at temperatures of 250400?C by using molecular beam epitaxy method, and their crystal and surface structures, perpendicular magnetic anisotropies and Curie temperatures were investigated. In the case of FePt-Ag, Ag addition with the amount of 1020 at.?% was effective to promote L1{sub 0} ordering and granular growth, resulting in the increase of the perpendicular magnetic anisotropy and coercivity of the FePt-Ag films. On the other hand, in the case of FePd-Ag, Ag addition changed the surface morphology from island to continuous film associated with the reductions of its coercivity and perpendicular anisotropy. The variations of lattice constants and Curie temperature with Ag addition were significantly different between FePt-Ag and FePd-Ag. For FePd-Ag, the c and a axes lattice spacings and Curie temperature gradually changed with increasing Ag content, while they unchanged for FePt-Ag. These results suggest the possibility of the formation of FePdAg alloy in FePd-Ag, while Ag segregation in FePt-Ag.

  12. Dual and Triple Ion-Beam Irradiations of Fe, Fe(Cr) and Fe(Cr)-ODS Final Report: IAEA SMoRE CRP

    SciTech Connect (OSTI)

    Fluss, M J; Hsiung, L L; Marian, J

    2011-11-20

    Structures of nanoparticles in Fe-16Cr-4.5Al-0.3Ti-2W-0.37Y2O3 (K3) and Fe-20Cr-4.5Al-0.34Ti-0.5Y2O3 (MA956) oxide dispersion strengthened (ODS) ferritic steels produced by mechanical alloying (MA) and followed by hot extrusion have been studied using high-resolution transmission electron microscopy (HRTEM) techniques to gain insight about the formation mechanism of nanoparticles in MA/ODS steels. The observations of Y-Al-O complex-oxide nanoparticles in both ODS steels imply that decomposition of Y2O3 in association with internal oxidation of Al occurred during mechanical alloying. While the majority of oxide nanoparticles formed in both steels is Y4Al2O9, a few oxide particles of YAlO3 are also occasionally observed. These results reveal that Ti (0.3 wt %) plays an insignificant role in forming oxide nanoparticles in the presence of Al (4.5 wt %). HRTEM observations of crystalline nanoparticles larger than {approx}2 nm and amorphous or disordered cluster domains smaller than {approx}2 nm provide an insight into the formation mechanism of oxide nanoparticle in MA/ODS steels, which we believe from our observations involves a solid-state amorphous precursor followed by recrystallization. Dual ion-beam irradiations using He{sup +} + Fe{sup +8} ions were employed to gain more detailed insight about the role of nanoparticles in suppressing radiation-induced swelling. This is elaborated through TEM examinations of cavity distributions in ion-irradiated Fe-14Cr and K3-ODS ferritic steels. HRTEM observations of helium-filled cavities (helium bubbles) preferably trapped at nanoscale oxide particles and clusters in ion-irradiated K3-ODS are presented. Finally, we describe the results from triple ion-beam irradiations using H{sup +} + He{sup +} + Fe{sup +8} ions to emulate fusion first wall radiation effects. Preliminary work is reported that confirms the existence of significant hydrogen synergistic effects described earlier by Tanaka et al., for Fe(Cr) and by Wakai et al

  13. Unification of [FeFe]-hydrogenases into three structural and functional groups

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

    Poudel, Saroj; Tokmina-Lukaszewska, Monika; Colman, Daniel R.; Refai, Mohammed; Schut, Gerrit J.; King, Paul W.; Maness, Pin-Ching; Adams, Michael W. W.; Peters, John W.; Bothner, Brian; et al

    2016-05-27

    [FeFe]-hydrogenases (Hyd) are structurally diverse enzymes that catalyze the reversible oxidation of hydrogen (H2). Recent biochemical data demonstrate new functional roles for these enzymes, including those that function in electron bifurcation where an exergonic reaction is coupled with an endergonic reaction to drive the reversible oxidation/production of H2. To identify the structural determinants that underpin differences in enzyme functionality, a total of 714 homologous sequences of the catalytic subunit, HydA, were compiled. Bioinformatics approaches informed by biochemical data were then used to characterize differences in inferred quaternary structure, HydA active site protein environment, accessory iron-sulfur clusters in HydA, and regulatorymore » proteins encoded in HydA gene neighborhoods. HydA homologs were clustered into one of three classification groups, Group 1 (G1), Group 2 (G2), and Group 3 (G3). G1 enzymes were predicted to be monomeric while those in G2 and G3 were predicted to be multimeric and include HydB, HydC (G2/G3) and HydD (G3) subunits. Variation in the HydA active site and accessory iron-sulfur clusters did not vary by group type. Group-specific regulatory genes were identified in the gene neighborhoods of both G2 and G3 Hyd. Analyses of purified G2 and G3 enzymes by mass spectrometry strongly suggests that they are post-translationally modified by phosphorylation. In conclusion, these results suggest that bifurcation capability is dictated primarily by the presence of both HydB and HydC in Hyd complexes, rather than by variation in HydA.« less

  14. Mechanically-induced disorder in CaFe2As2: A 57Fe Mössbauer study

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

    Ma, Xiaoming; Ran, Sheng; Canfield, Paul C.; Bud'ko, Sergey L.

    2015-10-17

    57Fe Mössbauer spectroscopy was used to perform a microscopic study on the extremely pressure and strain sensitive compound, CaFe2As2, with different degrees of strain introduced by grinding and annealing. At the base temperature, in the antiferromagnetic/orthorhombic phase, compared to a sharp sextet Mössbauer spectrum of single crystal CaFe2As2, which is taken as an un-strained sample, an obviously broadened sextet and an extra doublet were observed for ground CaFe2As2 powders with different degrees of strain. The Mössbauer results suggest that the magnetic phase transition of CaFe2As2 can be inhomogeneously suppressed by the grinding induced strain to such an extent that themore » antiferromagnetic order in parts of the grains forming the powdered sample remain absent all the way down to 4.6 K. However, strain has almost no effect on the temperature dependent hyperfine magnetic field in the grains with magnetic order. Additional electronic and asymmetry information was obtained from the isomer shift and quadrupole splitting. Similar isomer shift values in the magnetic phase for samples with different degrees of strain, indicate that the stain does not bring any significant variation of the electronic density at 57Fe nucleus position. As a result, the absolute values of quadrupole shift in the magnetic phase decrease and approach zero with increasing degrees of strain, indicating that the strain reduces the average lattice asymmetry at Fe atom position.« less

  15. Microporous Separators for Fe/V Redox Flow Batteries

    SciTech Connect (OSTI)

    Wei, Xiaoliang; Li, Liyu; Luo, Qingtao; Nie, Zimin; Wang, Wei; Li, Bin; Xia, Guanguang; Miller, Eric; Chambers, Jeff; Yang, Zhenguo

    2012-06-28

    The Fe/V redox flow battery has demonstrated promising performance that is advantageous over other redox flow battery systems. The less oxidative nature of the Fe(III) species enables use of hydrocarbon - based ion exchange membranes or separators. Daramic(reg. sign) microporous polyethylene separators were tested on Fe/V flow cells using the sulphuric/chloric mixed acid - supporting electrolytes. Among them, Daramic(reg. sign) C exhibited good flow cell cycling performance with satisfactory repeatability over a broad temperature range of 5 - 50 degrees C. Energy efficiency (EE) of C remains above 67% at current densities of 50 - 80 cm{sup -2} in the temperature range from room temperature to 50 degrees C. The capacity decay problem could be circumvented through hydraulic pressure balancing by applying different pump rates to the positive and negative electrolytes. Stable capacity and energy were obtained over 40 cycles at room temperature and 40 degrees C. These results manifest that the extremely low-cost separators ($10/cm2) are applicable in the Fe/V flow battery system at an acceptable sacrifice of energy efficiency. This stands for a remarkable breakthrough in significant reduction of the capital cost of the Fe/V flow battery system, and is promising to promote its market penetration in grid stabilization and renewable integration.

  16. Cladding burst behavior of Fe-based alloys under LOCA

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

    Terrani, Kurt A.; Dryepondt, Sebastien N.; Pint, Bruce A.; Massey, Caleb P.

    2015-12-17

    Burst behavior of austenitic and ferritic Fe-based alloy tubes has been examined under a simulated large break loss of coolant accident. Specifically, type 304 stainless steel (304SS) and oxidation resistant FeCrAl tubes were studied alongside Zircaloy-2 and Zircaloy-4 that are considered reference fuel cladding materials. Following the burst test, characterization of the cladding materials was carried out to gain insights regarding the integral burst behavior. Given the widespread availability of a comprehensive set of thermo-mechanical data at elevated temperatures for 304SS, a modeling framework was implemented to simulate the various processes that affect burst behavior in this Fe-based alloy. Themore » most important conclusion is that cladding ballooning due to creep is negligible for Fe-based alloys. Thus, unlike Zr-based alloys, cladding cross-sectional area remains largely unchanged up to the point of burst. Furthermore, for a given rod internal pressure, the temperature onset of burst in Fe-based alloys appears to be simply a function of the alloy's ultimate tensile strength, particularly at high rod internal pressures.« less

  17. Cladding burst behavior of Fe-based alloys under LOCA

    SciTech Connect (OSTI)

    Terrani, Kurt A.; Dryepondt, Sebastien N.; Pint, Bruce A.; Massey, Caleb P.

    2015-12-17

    Burst behavior of austenitic and ferritic Fe-based alloy tubes has been examined under a simulated large break loss of coolant accident. Specifically, type 304 stainless steel (304SS) and oxidation resistant FeCrAl tubes were studied alongside Zircaloy-2 and Zircaloy-4 that are considered reference fuel cladding materials. Following the burst test, characterization of the cladding materials was carried out to gain insights regarding the integral burst behavior. Given the widespread availability of a comprehensive set of thermo-mechanical data at elevated temperatures for 304SS, a modeling framework was implemented to simulate the various processes that affect burst behavior in this Fe-based alloy. The most important conclusion is that cladding ballooning due to creep is negligible for Fe-based alloys. Thus, unlike Zr-based alloys, cladding cross-sectional area remains largely unchanged up to the point of burst. Furthermore, for a given rod internal pressure, the temperature onset of burst in Fe-based alloys appears to be simply a function of the alloy's ultimate tensile strength, particularly at high rod internal pressures.

  18. FeN foils by nitrogen ion-implantation

    SciTech Connect (OSTI)

    Jiang, Yanfeng; Wang, Jian-Ping; Al Mehedi, Md; Fu, Engang; Wang, Yongqiang

    2014-05-07

    Iron nitride samples in foil shape (free standing, 500 nm in thickness) were prepared by a nitrogen ion-implantation method. To facilitate phase transformation, the samples were bonded on the substrate followed by a post-annealing step. By using two different substrates, single crystal Si and GaAs, structural and magnetic properties of iron nitride foil samples prepared with different nitrogen ion fluences were characterized. α″-Fe{sub 16}N{sub 2} phase in iron nitride foil samples was obtained and confirmed by the proposed approach. A hard magnetic property with coercivity up to 780 Oe was achieved for the FeN foil samples bonded on Si substrate. The feasibility of using nitrogen ion implantation techniques to prepare FeN foil samples up to 500 nm thickness with a stable martensitic phase under high ion fluences has been demonstrated. A possible mechanism was proposed to explain this result. This proposed method could potentially be an alternative route to prepare rare-earth-free FeN bulk magnets by stacking and pressing multiple free-standing thick α″-Fe{sub 16}N{sub 2} foils together.

  19. Observation of inverse spin Hall effect in ferromagnetic FePt alloys using spin Seebeck effect

    SciTech Connect (OSTI)

    Seki, Takeshi Takanashi, Koki; Uchida, Ken-ichi; Kikkawa, Takashi; Qiu, Zhiyong; Saitoh, Eiji

    2015-08-31

    We experimentally observed the inverse spin Hall effect (ISHE) of ferromagnetic FePt alloys. Spin Seebeck effect due to the temperature gradient generated the spin current (J{sub s}) in the FePt|Y{sub 3}Fe{sub 5}O{sub 12} (YIG) structure, and J{sub s} was injected from YIG to FePt and converted to the charge current through ISHE of FePt. The significant difference in magnetization switching fields for FePt and YIG led to the clear separation of the voltage of ISHE from that of anomalous Nernst effect in FePt. We also investigated the effect of ordering of FePt crystal structure on the magnitude of ISHE voltage in FePt.

  20. Single-crystal epitaxial thin films of SrFeO{sub 2} with FeO{sub 2} 'infinite layers'

    SciTech Connect (OSTI)

    Inoue, Satoru; Kawai, Masanori; Shimakawa, Yuichi [Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011 (Japan); Mizumaki, Masaichiro; Kawamura, Naomi [Japan Synchrotron Radiation Research Institute/SPring-8, Sayo, Hyogo 679-5198 (Japan); Watanabe, Takashi; Tsujimoto, Yoshihiro; Kageyama, Hiroshi; Yoshimura, Kazuyoshi [Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502 (Japan)

    2008-04-21

    Single-crystal thin films of SrFeO{sub 2}, which is an oxygen-deficient perovskite with ''infinite layers'' of Fe{sup 2+}O{sub 2}, were prepared by using CaH{sub 2} for low-temperature reduction of epitaxial SrFeO{sub 2.5} single-crystal films deposited on KTaO{sub 3} substrates. This reduction process, removing oxygen ions from the perovskite structure framework and causing rearrangements of oxygen ions, topotactically transforms the brownmillerite SrFeO{sub 2.5} to the c-axis oriented SrFeO{sub 2}.

  1. Electronic and magnetic properties of Si substituted Fe3Ge

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

    Shanavas, Kavungal Veedu; McGuire, Michael A.; Parker, David S.

    2015-09-23

    Using first principles calculations we studied the effect of Si substitution in the hexagonal Fe3Ge. We find the low temperature magnetic anisotropy in this system to be planar and originating mostly from the spin-orbit coupling in Fe-d states. Reduction of the unitcell volume reduces the in-plane magnetic anisotropy, eventually turning it positive which reorients the magnetic moments to the axial direction. We find that substituting Ge with the smaller Si ions also reduces the anisotropy, potentially enhancing the region of stability of the axial magnetization, which is beneficial for magnetic applications. Thus our experimental measurements on samples of Fe3Ge1–xSix confirmmore » these predictions and show that substitution of about 6% of the Ge with Si increases by approximately 35 K the temperature range over which anisotropy is uniaxial.« less

  2. Bimetallic Fe-Ni Oxygen Carriers for Chemical Looping Combustion

    SciTech Connect (OSTI)

    Bhavsar, Saurabh; Veser, Goetz

    2013-11-06

    The relative abundance, low cost, and low toxicity of iron make Fe-based oxygen carriers of great interest for chemical looping combustion (CLC), an emerging technology for clean and efficient combustion of fossil and renewable fuels. However, Fe also shows much lower reactivity than other metals (such as Ni and Cu). Here, we demonstrate strong improvement of Fe-based carriers by alloying the metal phase with Ni. Through a combination of carrier synthesis and characterization with thermogravimetric and fixed-bed reactor studies, we demonstrate that the addition of Ni results in a significant enhancement in activity as well as an increase in selectivity for total oxidation. Furthermore, comparing alumina and ceria as support materials highlights the fact that reducible supports can result in a strong increase in oxygen carrier utilization.

  3. New Fe-56 Evaluation for the CIELO project

    SciTech Connect (OSTI)

    Nobre, G P; Herman, Micheal W; Brown, D A; Capote, R.; Leal, Luiz C; Plompen, A.; Danon, Y.; Qian, Jing; Ge, Zhigang; Liu, Tingjin; Lu, Hnalin; Ruan, Xichao

    2016-01-01

    The Collaborative International Evaluated Library Organisation (CIELO) aims to provide revised and updated evaluations for Pu-239, U-238,U-235, Fe-56, O-16, and H-1 through international collaboration. This work, which is part of the CIELO project, presents the initial results for the evaluation of the Fe-56 isotope, with neutron-incident energy ranging from 0 to 20 MeV. The Fe-56(n,p) cross sections were fitted to reproduce the ones from IRDFF dosimetry file. Our preliminary file provides good cross-section agreements for the main angle-integrated reactions, as well as a reasonable overall agreement for angular distributions and double-differential spectra, when compared to previous evaluations.

  4. Spin-Lattice Coupling and Superconductivity in Fe Pnictides

    SciTech Connect (OSTI)

    Egami, Takeshi; Singh, David J; Fine, Boris V; Subedi, Alaska P; Parshall, Daniel

    2010-01-01

    We consider strong spin-lattice and spin-phonon coupling in iron pnictides and discuss its implications on superconductivity. Strong magneto-volume effect in iron compounds has long been known as the Invar effect. Fe pnictides also exhibit this effect, reflected in particular on the dependence of the magnetic moment on the atomic volume of Fe defined by the positions of the nearest neighbor atoms. Through the phenomenological Landau theory, developed on the basis of the calculations by the density functional theory (DFT) and the experimental results, we quantify the strength of the spin-lattice interaction as it relates to the Stoner criterion for the onset of magnetism. We suggest that the coupling between electrons and phonons through the spin channel may be sufficiently strong to be an important part of the superconductivity mechanism in Fe pnictides.

  5. Spin-Lattice Coupling and Superconductivity in Fe Pnictides

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

    Egami, T.; Fine, B. V.; Parshall, D.; Subedi, A.; Singh, D. J.

    2010-01-01

    We consider strong spin-lattice and spin-phonon coupling in iron pnictides and discuss its implications on superconductivity. Strong magneto-volume effect in iron compounds has long been known as the Invar effect. Fe pnictides also exhibit this effect, reflected in particular on the dependence of the magnetic moment on the atomic volume of Fe defined by the positions of the nearest neighbor atoms. Through the phenomenological Landau theory, developed on the basis of the calculations by the density functional theory (DFT) and the experimental results, we quantify the strength of the spin-lattice interaction as it relates to the Stoner criterion for themore » onset of magnetism. We suggest that the coupling between electrons and phonons through the spin channel may be sufficiently strong to be an important part of the superconductivity mechanism in Fe pnictides.« less

  6. Constructing hierarchical interfaces: TiO2-supported PtFe-FeOx nanowires for room temperature CO oxidation

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

    Zhu, Huiyuan; Wu, Zili; Dong, Su; Veith, Gabriel M.; Lu, Hanfeng; Zhang, Pengfei; Chai, Song -Hai; Dai, Sheng

    2015-08-05

    This is a report of a facile approach to constructing catalytic active hierarchical interfaces in one-dimensional (1D) nanostructure, exemplified by the synthesis of TiO2-supported PtFe–FeOx nanowires (NWs). The hierarchical interface, constituting atomic level interactions between PtFe and FeOx within each NW and the interactions between NWs and support (TiO2), enables CO oxidation with 100% conversion at room temperature. We identify the role of the two interfaces by probing the CO oxidation reaction with isotopic labeling experiments. Both the oxygen atoms (Os) in FeOx and TiO2 participate in the initial CO oxidation, facilitating the reaction through a redox pathway. Moreover, themore » intact 1D structure leads to the high stability of the catalyst. After 30 h in the reaction stream, the PtFe–FeOx/TiO2 catalyst exhibits no activity decay. These results provide a general approach and new insights into the construction of hierarchical interfaces for advanced catalysis.« less

  7. Structural and Electrochemical Characterization of Pure LiFePO 4 and Nanocomposite C- LiFePO 4 Cathodes for Lithium Ion Rechargeable Batteries

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

    Kumar, Arun; Thomas, R.; Karan, N. K.; Saavedra-Arias, J. J.; Singh, M. K.; Majumder, S. B.; Tomar, M. S.; Katiyar, R. S.

    2009-01-01

    Pure limore » thium iron phosphate ( LiFePO 4 ) and carbon-coated LiFePO 4 (C- LiFePO 4 ) cathode materials were synthesized for Li-ion batteries. Structural and electrochemical properties of these materials were compared. X-ray diffraction revealed orthorhombic olivine structure. Micro-Raman scattering analysis indicates amorphous carbon, and TEM micrographs show carbon coating on LiFePO 4 particles. Ex situ Raman spectrum of C- LiFePO 4 at various stages of charging and discharging showed reversibility upon electrochemical cycling. The cyclic voltammograms of LiFePO 4 and C- LiFePO 4 showed only a pair of peaks corresponding to the anodic and cathodic reactions. The first discharge capacities were 63, 43, and 13 mAh/g for C/5, C/3, and C/2, respectively for LiFePO 4 where as in case of C- LiFePO 4 that were 163, 144, 118, and 70 mAh/g for C/5, C/3, C/2, and 1C, respectively. The capacity retention of pure LiFePO 4 was 69% after 25 cycles where as that of C- LiFePO 4 was around 97% after 50 cycles. These results indicate that the capacity and the rate capability improved significantly upon carbon coating.« less

  8. Structural and Electrochemical Characterization of PureLiFePO4and Nanocomposite C-LiFePO4Cathodes for Lithium Ion Rechargeable Batteries

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

    Kumar, Arun; Thomas, R.; Karan, N. K.; Saavedra-Arias, J. J.; Singh, M. K.; Majumder, S. B.; Tomar, M. S.; Katiyar, R. S.

    2009-01-01

    Pure lithium iron phosphate (LiFePO4) and carbon-coatedLiFePO4(C-LiFePO4) cathode materials were synthesized for Li-ion batteries. Structural and electrochemical properties of these materials were compared. X-ray diffraction revealed orthorhombic olivine structure. Micro-Raman scattering analysis indicates amorphous carbon, and TEM micrographs show carbon coating onLiFePO4particles. Ex situ Raman spectrum of C-LiFePO4at various stages of charging and discharging showed reversibility upon electrochemical cycling. The cyclic voltammograms ofLiFePO4and C-LiFePO4showed only a pair of peaks corresponding to the anodic and cathodic reactions. The first discharge capacities were 63, 43, and 13?mAh/g for C/5, C/3, and C/2, respectively forLiFePO4where as in case of C-LiFePO4that were 163, 144,more118, and 70?mAh/g for C/5, C/3, C/2, and 1C, respectively. The capacity retention of pureLiFePO4was 69% after 25 cycles where as that of C-LiFePO4was around 97% after 50 cycles. These results indicate that the capacity and the rate capability improved significantly upon carbon coating.less

  9. Optimization of L1{sub 0} FePt/Fe{sub 45}Co{sub 55} thin films for rare earth free permanent magnet applications

    SciTech Connect (OSTI)

    Giannopoulos, G. Psycharis, V.; Niarchos, D.; Reichel, L.; Markou, A.; Panagiotopoulos, I.; Damm, C.; Fähler, S.; Khan, Imran; Hong, Jisang

    2015-06-14

    The magnetic properties of magnetron sputtered bilayers consisting of Fe{sub 45}Co{sub 55} ultrathin layers on top of L1{sub 0} FePt films epitaxially grown on MgO substrates are studied in view of their possible application as rare earth free permanent magnets. It is found that FePt layers induce a tetragonal distortion to the Fe-Co layers which leads to increased anisotropy. This allows to take advantage of the Fe-Co high magnetic moment with less significant loss of the coercivity compared to a typical hard/soft exchange spring system. A maximum energy product approaching 50 MGOe is obtained for a FePt(7 ML)/FeCo/(5 ML) sample. The results are in accordance with first-principles computational methods, which predict that even higher energy products are possible for micromagnetically optimized microstructures.

  10. SPECTROSCOPIC OBSERVATIONS OF Fe XVIII IN SOLAR ACTIVE REGIONS

    SciTech Connect (OSTI)

    Teriaca, Luca; Curdt, Werner; Warren, Harry P.

    2012-08-01

    The large uncertainties associated with measuring the amount of high temperature emission in solar active regions (ARs) represents a significant impediment to making progress on the coronal heating problem. Most current observations at temperatures of 3 MK and above are taken with broadband soft X-ray instruments. Such measurements have proven difficult to interpret unambiguously. Here, we present the first spectroscopic observations of the Fe XVIII 974.86 A emission line in an on-disk AR taken with the SUMER instrument on SOHO. Fe XVIII has a peak formation temperature of 7.1 MK and provides important constraints on the amount of impulsive heating in the corona. Detailed evaluation of the spectra and comparison of the SUMER data with soft X-ray images from the X-Ray Telescope on Hinode confirm that this line is unblended. We also compare the spectroscopic data with observations from the Atmospheric Imaging Assembly (AIA) 94 A channel on the Solar Dynamics Observatory. The AIA 94 A channel also contains Fe XVIII, but is blended with emission formed at lower temperatures. We find that it is possible to remove the contaminating blends and form relatively pure Fe XVIII images that are consistent with the spectroscopic observations from SUMER. The observed spectra also contain the Ca XIV 943.63 A line that, although a factor 2-6 weaker than the Fe XVIII 974.86 A line, allows us to probe the plasma around 3.5 MK. The observed ratio between the two lines indicates (isothermal approximation) that most of the plasma in the brighter Fe XVIII AR loops is at temperatures between 3.5 and 4 MK.