検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Magnetoelastic anisotropy in Heusler-type Mn$$_{2-delta}$$CoGa$$_{1+delta}$$ films

ホイスラー型Mn$$_{2-delta}$$CoGa$$_{1+delta}$$薄膜における磁気弾性異方性

窪田 崇秀*; 高野 大地*; 小田 洋平*; Mohanty, S.*; 伊藤 啓太*; 松木 充弘*; 林田 誠弘*; Sun, M.*; 竹田 幸治   ; 斎藤 祐児  ; Bedanta, S.*; 木村 昭夫*; 高梨 弘毅*

Kubota, Takahide*; Takano, Daichi*; Kota, Yohei*; Mohanty, S.*; Ito, Keita*; Matsuki, Mitsuhiro*; Hayashida, Masahiro*; Sun, M.*; Takeda, Yukiharu; Saito, Yuji; Bedanta, S.*; Kimura, Akio*; Takanashi, Koki*

This study focuses on an inverse-type Heusler alloy, Mn$$_{2-delta}$$CoGa$$_{1+delta}$$ (MCG), with a small off-stoichiometry ($$delta$$), showing perpendicular magnetic anisotropy (PMA). We observed a relatively large uniaxial magnetocrystalline anisotropy constant ($$K_mathrm{u}$$) on the order of 10$$^5$$ J/m$$^3$$ at room temperature in the MCG films with a small tetragonal distortion of a few percent. X-ray magnetic circular dichroism (XMCD) was employed to get insight into the origin for the PMA. Negligible angular variation of the orbital magnetic moment evaluated using the XMCD spectra suggested a minor role of the so-called Bruno's term to $$K_mathrm{u}$$. The origin of the PMA was discussed based on the second-order perturbation theory in terms of the spin-orbit coupling, and first principles calculations, claiming that the mixing of the occupied $$uparrow$$- and the unoccupied $$downarrow$$-spin states is responsible for the PMA of the MCG films.

Access

:

- Accesses

InCites™

:

パーセンタイル:43.81

分野:Materials Science, Multidisciplinary

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.