Synthesis and characterization of Ca-doped LaMnAsO

Liu, Yong; Straszheim, Warren E.; Das, Pinaki; Islam, Farhan; Heitmann, Thomas W.; McQueeney, Robert J.; Vaknin, David

doi:10.1103/PhysRevMaterials.2.054410

Title: Synthesis and characterization of Ca-doped LaMnAsO

Abstract

Here, we report on our attempt to hole-dope the antiferromagnetic semiconductor LaMnAsO by substitution of the La³⁺ site by Ca²⁺. We use neutron and x-ray diffraction, magnetic susceptibility, and transport techniques to characterize polycrystalline (La_1–xCa_x)MnAsO samples prepared by solid-state reaction and find that the parent compound is highly resistant to substitution with an upper limit x ≤ 0.01. Magnetic susceptibility of the parent and the x = 0.002(x_nom = 0.04) compounds indicate a negligible presence of magnetic impurities (i.e., MnO or MnAs). Rietveld analysis of neutron and x-ray diffraction data shows the preservation of both the tetragonal (P4/nmm) structure upon doping and the antiferromagnetic ordering temperature, T_N = 355 ± 5 K.

Authors:

Liu, Yong ^[1]; Straszheim, Warren E. ^[1]; Das, Pinaki ^[1]; Islam, Farhan ^[1]; Heitmann, Thomas W. ^[2]; McQueeney, Robert J. ^[1]; Vaknin, David ^[1]

Ames Lab. and Iowa State Univ., Ames, IA (United States)
Univ. of Missouri, Columbia, MO (United States)

Publication Date:: Fri May 18 00:00:00 EDT 2018

Research Org.:: Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1441003

Alternate Identifier(s):: OSTI ID: 1437677

Report Number(s):: IS-J-9679
Journal ID: ISSN 2475-9953; PRMHAR; TRN: US1900862

Grant/Contract Number:: AC02-07CH11358

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Materials

Additional Journal Information:: Journal Volume: 2; Journal Issue: 5; Journal ID: ISSN 2475-9953

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats


                    Liu, Yong, Straszheim, Warren E., Das, Pinaki, Islam, Farhan, Heitmann, Thomas W., McQueeney, Robert J., and Vaknin, David. Synthesis and characterization of Ca-doped LaMnAsO.  United States: N. p., 2018. 
Web.  doi:10.1103/PhysRevMaterials.2.054410.

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                    Liu, Yong, Straszheim, Warren E., Das, Pinaki, Islam, Farhan, Heitmann, Thomas W., McQueeney, Robert J., & Vaknin, David. Synthesis and characterization of Ca-doped LaMnAsO.  United States.  https://doi.org/10.1103/PhysRevMaterials.2.054410

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                    Liu, Yong, Straszheim, Warren E., Das, Pinaki, Islam, Farhan, Heitmann, Thomas W., McQueeney, Robert J., and Vaknin, David. Fri .  
"Synthesis and characterization of Ca-doped LaMnAsO".  United States.  https://doi.org/10.1103/PhysRevMaterials.2.054410.  https://www.osti.gov/servlets/purl/1441003.

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@article{osti_1441003,

  title        = {Synthesis and characterization of Ca-doped LaMnAsO},

  author       = {Liu, Yong and Straszheim, Warren E. and Das, Pinaki and Islam, Farhan and Heitmann, Thomas W. and McQueeney, Robert J. and Vaknin, David},

  abstractNote = {Here, we report on our attempt to hole-dope the antiferromagnetic semiconductor LaMnAsO by substitution of the La3+ site by Ca2+. We use neutron and x-ray diffraction, magnetic susceptibility, and transport techniques to characterize polycrystalline (La1–xCax)MnAsO samples prepared by solid-state reaction and find that the parent compound is highly resistant to substitution with an upper limit x ≤ 0.01. Magnetic susceptibility of the parent and the x = 0.002(xnom = 0.04) compounds indicate a negligible presence of magnetic impurities (i.e., MnO or MnAs). Rietveld analysis of neutron and x-ray diffraction data shows the preservation of both the tetragonal (P4/nmm) structure upon doping and the antiferromagnetic ordering temperature, TN = 355 ± 5 K.},

  doi          = {10.1103/PhysRevMaterials.2.054410},

  journal      = {Physical Review Materials},

  number       = 5,

  volume       = 2,

  place        = {United States},

  year         = {Fri May 18 00:00:00 EDT 2018},

  month        = {Fri May 18 00:00:00 EDT 2018}

}

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https://doi.org/10.1103/PhysRevMaterials.2.054410

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Cited by: 3 works

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Figures / Tables:

FIG. 1: (Color online) Powder X-ray di raction patterns for nominally Ca - La substituted samples (La_1–xCa_x) MnAsO as indicated. The patterns are shifted for clarity, and x_nom refers to the nominal amount in the preparation, and and x_EDS is the amount determined by EDS (from here on for consistencymore »

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Works referenced in this record:

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Title: Synthesis and characterization of Ca-doped LaMnAsO

Abstract

Citation Formats

Figures / Tables:

Structure and magnetic properties of L n MnSbO ( L n = La and Ce) journal, March 2016

Local moments and symmetry breaking in metallic PrMnSbO journal, September 2010

Giant magnetoresistance in oxypnictides (La,Nd)OMnAs journal, January 2010

Short- and long-range magnetic order in LaMnAsO journal, February 2016

Magnetic phase diagram of MnAs: Effect of magnetic field on structural and magnetic transitions journal, September 1982

A Magnetic Transition Probed by the Ce Ion in Square-Lattice Antiferromagnet CeMnAsO journal, September 2011

Variable temperature study of the crystal and magnetic structures of the giant magnetoresistant materials L MnAsO( L = La, Nd) journal, April 2011

Persistence of local-moment antiferromagnetic order in Ba 1 − x K x Mn 2 As 2 journal, April 2013

Spin Reorientation in the Square-Lattice Antiferromagnets RMnAsO (R = Ce, Nd): Density Functional Analysis of the Spin-Exchange Interactions between the Rare-Earth and Transition-Metal Ions journal, June 2012

Effects of Pressure on the Magnetic Properties of MnAs journal, January 1969

Electronic structure and magnetism in BaMn 2 As 2 and BaMn 2 Sb 2 journal, February 2009

From antiferromagnetic insulator to ferromagnetic metal: Effects of hydrogen substitution in LaMnAsO journal, January 2013

Insulator-to-metal transition and large thermoelectric effect in La 1−x Sr x MnAsO journal, April 2012

Nd-induced Mn spin-reorientation transition in NdMnAsO journal, November 2010

X-Ray Diffraction in Random Layer Lattices journal, May 1941

Crystal, magnetic and electronic structures and properties of new BaMnPnF (Pn = As, Sb, Bi) journal, July 2013

Spin reorientation and Ce-Mn coupling in antiferromagnetic oxypnictide CeMnAsO journal, February 2015

Ba 1 − x K x Mn 2 As 2 : An Antiferromagnetic Local-Moment Metal journal, February 2012

Itinerant Ferromagnetism in the As 4 p Conduction Band of Ba 0.6 K 0.4 Mn 2 As 2 Identified by X-Ray Magnetic Circular Dichroism journal, May 2015

Structure and magnetic properties of $L n MnSbO$ ( $L n = La$ and Ce)
journal, March 2016

Local moments and symmetry breaking in metallic PrMnSbO
journal, September 2010

Giant magnetoresistance in oxypnictides (La,Nd)OMnAs
journal, January 2010

Short- and long-range magnetic order in LaMnAsO
journal, February 2016

Magnetic phase diagram of MnAs: Effect of magnetic field on structural and magnetic transitions
journal, September 1982

A Magnetic Transition Probed by the Ce Ion in Square-Lattice Antiferromagnet CeMnAsO
journal, September 2011

Variable temperature study of the crystal and magnetic structures of the giant magnetoresistant materials $L$ MnAsO( $L$ $=$ La, Nd)
journal, April 2011

Persistence of local-moment antiferromagnetic order in Ba $_{1 - x}$ K $_{x}$ Mn $_{2}$ As $_{2}$
journal, April 2013

Spin Reorientation in the Square-Lattice Antiferromagnets RMnAsO (R = Ce, Nd): Density Functional Analysis of the Spin-Exchange Interactions between the Rare-Earth and Transition-Metal Ions
journal, June 2012

Effects of Pressure on the Magnetic Properties of MnAs
journal, January 1969

Electronic structure and magnetism in ${BaMn}_{2} {As}_{2}$ and ${BaMn}_{2} {Sb}_{2}$
journal, February 2009

From antiferromagnetic insulator to ferromagnetic metal: Effects of hydrogen substitution in LaMnAsO
journal, January 2013

Insulator-to-metal transition and large thermoelectric effect in La _1−x Sr _x MnAsO
journal, April 2012

Nd-induced Mn spin-reorientation transition in NdMnAsO
journal, November 2010

X-Ray Diffraction in Random Layer Lattices
journal, May 1941

Crystal, magnetic and electronic structures and properties of new BaMnPnF (Pn = As, Sb, Bi)
journal, July 2013

Spin reorientation and Ce-Mn coupling in antiferromagnetic oxypnictide CeMnAsO
journal, February 2015

${Ba}_{1 - x} K_{x} {Mn}_{2} {As}_{2}$ : An Antiferromagnetic Local-Moment Metal
journal, February 2012

Itinerant Ferromagnetism in the As $4 p$ Conduction Band of ${Ba}_{0.6} K_{0.4} {Mn}_{2} {As}_{2}$ Identified by X-Ray Magnetic Circular Dichroism
journal, May 2015