Large Uniaxial Magnetic Anisotropy of Hexagonal Fe-Hf-Sb Alloys

Crystals

Sergii Khmelevskyi¹  Dominik Legut²  Lukas Kyvala³  Maxim Tchaplianka³  AlexanderB. Shick³ 

[1] Center for Computational Materials Science, Vienna University of Technology, Wiedner Hauptstrasse 8-10, A-1040 Vienna, Austria;IT4Innovations and Nanotechnology Centre, VSB-Technical University of Ostrava, 17. listopadu 2172/15, CZ-70800 Ostrava-Poruba, Czech Republic;Institute of Physics, Czech Academy of Sciences, Na Slovance 2, CZ-18221 Prague, Czech Republic;

关键词: electronic structure;    magnetism;    magnetic anisotropy;    permanent magnets;   

DOI  :  10.3390/cryst10060430

来源: DOAJ

【 摘 要 】

We theoretically investigate the electronic and magnetic structure of Fe${}_2$Hf. The density functional theory calculations are shown to produce the negative, easy-plane, magnetic anisotropy in the hexagonal Fe${}_2$Hf. Antimony substitution suppresses the planar magnetization direction and favors the uniaxial magnetic anisotropy, in agreement with experimental observations. Our study suggests the possibility of the chemical control of the magnetic anisotropy in Fe${}_2$Hf by Sb substitution, and illustrates the potential of (Fe,Sb)${}_{2+x}$Hf${}_{1-x}$ Laves phase alloys for the permanent magnet applications.

【 授权许可】

Unknown