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公開日 |
2022-06-07 |
タイトル |
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タイトル |
Electric-Field Modulation of Perpendicular Magnetic Anisotropy and Damping Constant in MgO/Co/Pt Trilayers |
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言語 |
en |
著者 |
Sakoguchi, A.
Oshima, D.
Iwata, S.
Kato, T.
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アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
権利 |
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言語 |
en |
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権利情報 |
“© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.” |
内容記述 |
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内容記述 |
Electric field modulations of the perpendicular magnetic anisotropy (PMA) and magnetization dynamics of MgO/Co/Pt trilayers were measured by time-resolved magneto-optical Kerr effect (TRMOKE). The anisotropy field estimated from the anomalous Hall effect applying a field along in-plane was confirmed to be modified by the electric field, which results in the PMA variation with an electric field of −32 fJ/( V⋅m ). The PMA variation was also confirmed from TRMOKE measurements, which was estimated to be −47 fJ/( V⋅m ). From TRMOKE measurements, we also observed the reduction of the inverse of relaxation time 1/ τ of the magnetization precession with increasing the electric field. The 1/ τ was analyzed by assuming the contributions of effective Gilbert damping α_eff , anisotropy distribution, anisotropy angle distribution, and two magnon scattering, and we found α_eff decreased with increasing the electric field whose modulation was −0.0046 nm/V, corresponding to −13% per 1 V/nm. These results are similar to the electric field effect in (001)-orientated MgO/CoFeB/Ta trilayers, however, our finding indicates similar PMA and α modulations are found in MgO/Co/Pt trilayers having MgO(111)/fcc-Co interface. |
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言語 |
en |
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内容記述タイプ |
Abstract |
出版者 |
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言語 |
en |
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出版者 |
IEEE |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプresource |
http://purl.org/coar/resource_type/c_6501 |
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タイプ |
journal article |
出版タイプ |
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出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
関連情報 |
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関連タイプ |
isVersionOf |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1109/TMAG.2021.3083078 |
収録物識別子 |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
0018-9464 |
書誌情報 |
en : IEEE Transactions on Magnetics
巻 58,
号 2,
p. 1-5,
発行日 2022-02
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