Electron theory of perpendicular magnetic anisotropy of Co-ferrite thin films | Zendy

Jun-ichiro Inoue | Zendy; Tomohiko Niizeki | Zendy; Hideto Yanagihara | Zendy; H. Itoh | Zendy; Eiji Kita | Zendy

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Electron theory of perpendicular magnetic anisotropy of Co-ferrite thin films

Author(s) -

Jun-ichiro Inoue,

Tomohiko Niizeki,

Hideto Yanagihara,

H. Itoh,

Eiji Kita

Publication year - 2014

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4866279

Subject(s) - condensed matter physics , tetragonal crystal system , magnetic anisotropy , magnetization , ion , film plane , anisotropy , electron , ferrite (magnet) , magnetic moment , materials science , perpendicular , magnetic field , chemistry , physics , crystal structure , crystallography , optics , organic chemistry , geometry , mathematics , quantum mechanics , composite material

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

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