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X-ray magnetic circular dichroism studies of (001)-oriented NiFe/Mn_100-x Pt_x exchange bilayers
http://hdl.handle.net/2237/8778
http://hdl.handle.net/2237/87782dedbb96-9c8b-4c84-9a9a-8f0947712251
名前 / ファイル | ライセンス | アクション |
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JourAppPhys_100-113907.pdf (157.5 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2007-09-25 | |||||
タイトル | ||||||
タイトル | X-ray magnetic circular dichroism studies of (001)-oriented NiFe/Mn_100-x Pt_x exchange bilayers | |||||
言語 | en | |||||
著者 |
Yamato, T.
× Yamato, T.× Kume, T.× Kato, T.× Tsunashima, S.× Nakamura, T.× Fujiwara, Y.× Iwata, S. |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | Copyright (2006) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. | |||||
抄録 | ||||||
内容記述 | (001)-oriented Ni80Fe20/Mn100−x Ptx and Co90Fe10/Mn100−x Ptx epitaxial bilayers were prepared using the molecular beam epitaxy method. Their exchange anisotropies were measured using a torque magnetometer, while their interfacial Mn uncompensated moments were measured by means of x-ray magnetic circular dichroism. The bilayers exhibited both one- and fourfold components in their anisotropy torque curves, which are difficult to explain using a simple model assuming the coherent rotation of ferromagnetic (F) and antiferromagnetic (AF) spins. Uncompensated Mn moments were confirmed to exist in the Mn100−x Ptx layer due to exchange coupling with the adjacent F layer, and the Mn moment of CoFe/Mn100−x Ptx was found to be larger than that of NiFe/Mn100−x Ptx. In order to understand the experimental results, we extended the Mauri et al. [J. Appl. Phys. 62, 3047 (1987)] domain wall model by assuming cubic anisotropy in the AF and four AF domains whose interfacial moments are oriented along the principal axis of (001)-oriented Mn–Pt. The model predicted the uncompensated AF moment resulting from the domain wall formed in the AF layer and well reproduced the coexistence of one- and fourfold anisotropies in the in-plane torque curves. The uncompensated moment and torque curve were found to be dependent on the ratio of F/AF interfacial exchange coupling and the AF domain wall energy. By changing the ratio, it was possible to reproduce exchange anisotropy for various systems, such as NiFe/MnPt, NiFe/MnIr, and CoFe/MnPt. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | American Institute of Physics | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1063/1.2388136 | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0021-8979 | |||||
書誌情報 |
en : JOURNAL OF APPLIED PHYSICS 巻 100, 号 11, p. 113907-113907, 発行日 2006-12-01 |
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フォーマット | ||||||
application/pdf | ||||||
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値 | publisher | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/8778 | |||||
識別子タイプ | HDL |