Electron theory of perpendicular magnetic anisotropy of Co-ferrite thin films
Electron theory of perpendicular magnetic anisotropy of Co-ferrite thin films
复制标题
钴铁氧体薄膜垂直磁各向异性的电子理论
DOI:
10.1063/1.4866279
复制
发表时间:
2014
期刊:
影响因子:
1.6
通讯作者:
E. Kita
中科院分区:
文献类型:
--
作者:
J. Inoue;T. Niizeki;H. Yanagihara;H. Itoh;E. Kita
We develop an electron theory for the t2g electrons of Co2+ ions to clarify the perpendicular magnetic anisotropy (PMA) mechanism of Co-ferrite thin films by considering the spin-orbit interaction (SOI) and crystal-field (CF) potentials induced by the local symmetry around the Co ions and the global tetragonal symmetry of the film. Uniaxial and in-plane MA constants Ku and K1 at 0 K, respectively, are calculated for various values of SOI and CF. We show that reasonable parameter values explain the observed PMA and that the orbital moment for the in-plane magnetization reduces to nearly half of that of the out-of-plane magnetization.
DOI:
--
发表时间:
2008
期刊:
Phys. Rev. Lett. Vol.100
影响因子:
--
作者:
Hiroshi Kontani;et. al.
通讯作者:
et. al.