Origin of the spin reorientation transitions in (Fe1–xCox)2B alloys

Belashchenko, Kirill D.; Ke, Liqin; Däne, Markus; Benedict, Lorin X.; Lamichhane, Tej Nath; Taufour, Valentin; Jesche, Anton; Bud'ko, Sergey L.; Canfield, Paul C.; Antropov, Vladimir P.

doi:10.1063/1.4908056

Title: Origin of the spin reorientation transitions in (Fe_1–xCo_x)₂B alloys

Journal Article · Fri Feb 13 00:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4908056· OSTI ID:1227211

^[1]; Ke, Liqin ^[2]; Däne, Markus ^[3]; Benedict, Lorin X. ^[3];

^[4]; Taufour, Valentin ^[4]; Jesche, Anton ^[4]; Bud'ko, Sergey L. ^[4]; Canfield, Paul C. ^[4]; Antropov, Vladimir P. ^[2]

Univ. of Nebraska-Lincoln, Lincoln, NE (United States)
Ames Lab., Ames, IA (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)

Low-temperature measurements of the magnetocrystalline anisotropy energy K in (Fe_1–xCo_x)₂B alloys are reported, and the origin of this anisotropy is elucidated using a first-principles electronic structure analysis. The calculated concentration dependence K(x) with a maximum near x = 0.3 and a minimum near x = 0.8 is in excellent agreement with experiment. This dependence is traced down to spin-orbital selection rules and the filling of electronic bands with increasing electronic concentration. In conclusion, at the optimal Co concentration, K depends strongly on the tetragonality and doubles under a modest 3% increase of the c/a ratio, suggesting that the magnetocrystalline anisotropy can be further enhanced using epitaxial or chemical strain.

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Research Organization:: Ames Laboratory (AMES), Ames, IA (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)

Grant/Contract Number:: DMR1308751; Critical Materials Institute; AC02-07CH11358; AC52-07NA27344; DMR-1308751

OSTI ID:: 1227211

Alternate ID(s):: OSTI ID: 1226707; OSTI ID: 1262189

Report Number(s):: IS-J-8575; LLNL-JRNL-673802; APPLAB

Journal Information:: Applied Physics Letters, Vol. 106, Issue 6; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 25 works

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References (14)

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Perpendicular magnetic anisotropy in bulk and thin-film CuMnAs for antiferromagnetic memory applications Zhuravlev, I. A.; Adhikari, A.; Belashchenko, K. D. Applied Physics Letters, Vol. 113, Issue 16 https://doi.org/10.1063/1.5048207	journal	October 2018
Density functional theory calculations of magnetocrystalline anisotropy energies for ( Fe _{1– x} Co _x ) ₂ B Däne, Markus; Kyung Kim, Soo; Surh, Michael P. Journal of Physics: Condensed Matter, Vol. 27, Issue 26 https://doi.org/10.1088/0953-8984/27/26/266002	journal	June 2015
Magnetic properties of $({Fe}_{1 - x} {Co}_{x})_{2} B$ alloys and the effect of doping by $5 d$ elements Edström, A.; Werwiński, M.; Iuşan, D. Physical Review B, Vol. 92, Issue 17 https://doi.org/10.1103/physrevb.92.174413	journal	November 2015
Ab Initio Construction of Magnetic Phase Diagrams in Alloys: The Case of ${Fe}_{1 - x} {Mn}_{x} Pt$ Pujari, B. S.; Larson, P.; Antropov, V. P. Physical Review Letters, Vol. 115, Issue 5 https://doi.org/10.1103/physrevlett.115.057203	journal	July 2015
Theory of spin loss at metallic interfaces Belashchenko, K. D.; Kovalev, Alexey A.; van Schilfgaarde, M. arXiv https://doi.org/10.48550/arxiv.1603.04281	text	January 2016
Discovery of ferromagnetism with large magnetic anisotropy in ZrMnP and HfMnP Lamichhane, Tej N.; Taufour, Valentin; Masters, Morgan W. arXiv https://doi.org/10.48550/arxiv.1612.03166	text	January 2016
Perpendicular magnetic anisotropy in bulk and thin-film CuMnAs for antiferromagnetic memory applications Zhuravlev, I. A.; Adhikari, A.; Belashchenko, K. D. arXiv https://doi.org/10.48550/arxiv.1810.00249	text	January 2018

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