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

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

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...

Full description

Bibliographic Details
Main Authors: Jun-ichiro Inoue, Tomohiko Niizeki, Hideto Yanagihara, Hiroyoshi Itoh, Eiji Kita
Format: Article
Language:English
Published: AIP Publishing LLC 2014-02-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4866279
id doaj-aef6d28075af44cb8096acd04470f3f5
record_format Article
spelling doaj-aef6d28075af44cb8096acd04470f3f52020-11-24T21:07:26ZengAIP Publishing LLCAIP Advances2158-32262014-02-0142027111027111-710.1063/1.4866279011402ADVElectron theory of perpendicular magnetic anisotropy of Co-ferrite thin filmsJun-ichiro Inoue0Tomohiko Niizeki1Hideto Yanagihara2Hiroyoshi Itoh3Eiji Kita4Institute of Applied Physics, University of Tsukuba, Tsukuba 305-8573, JapanInstitute of Applied Physics, University of Tsukuba, Tsukuba 305-8573, JapanInstitute of Applied Physics, University of Tsukuba, Tsukuba 305-8573, JapanDepartment of Pure and Applied Physics, Kansai University, Suita 564-8680, JapanInstitute of Applied Physics, University of Tsukuba, Tsukuba 305-8573, JapanWe 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.http://dx.doi.org/10.1063/1.4866279
collection DOAJ
language English
format Article
sources DOAJ
author Jun-ichiro Inoue
Tomohiko Niizeki
Hideto Yanagihara
Hiroyoshi Itoh
Eiji Kita
spellingShingle Jun-ichiro Inoue
Tomohiko Niizeki
Hideto Yanagihara
Hiroyoshi Itoh
Eiji Kita
Electron theory of perpendicular magnetic anisotropy of Co-ferrite thin films
AIP Advances
author_facet Jun-ichiro Inoue
Tomohiko Niizeki
Hideto Yanagihara
Hiroyoshi Itoh
Eiji Kita
author_sort Jun-ichiro Inoue
title Electron theory of perpendicular magnetic anisotropy of Co-ferrite thin films
title_short Electron theory of perpendicular magnetic anisotropy of Co-ferrite thin films
title_full Electron theory of perpendicular magnetic anisotropy of Co-ferrite thin films
title_fullStr Electron theory of perpendicular magnetic anisotropy of Co-ferrite thin films
title_full_unstemmed Electron theory of perpendicular magnetic anisotropy of Co-ferrite thin films
title_sort electron theory of perpendicular magnetic anisotropy of co-ferrite thin films
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2014-02-01
description 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.
url http://dx.doi.org/10.1063/1.4866279
work_keys_str_mv AT junichiroinoue electrontheoryofperpendicularmagneticanisotropyofcoferritethinfilms
AT tomohikoniizeki electrontheoryofperpendicularmagneticanisotropyofcoferritethinfilms
AT hidetoyanagihara electrontheoryofperpendicularmagneticanisotropyofcoferritethinfilms
AT hiroyoshiitoh electrontheoryofperpendicularmagneticanisotropyofcoferritethinfilms
AT eijikita electrontheoryofperpendicularmagneticanisotropyofcoferritethinfilms
_version_ 1716762896784949248

Similar Items