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Critical phenomenon in soft magnetic properties of giant magnetostrictive materials: Computer simulation
http://hdl.handle.net/10069/21942
http://hdl.handle.net/10069/21942e0ffd128-dd4c-4f38-b463-4e1d9e0a8ef3
| 名前 / ファイル | ライセンス | アクション |
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JouApplPhy99_08M709.pdf (120.9 kB)
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| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||||
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| 公開日 | 2009-05-27 | |||||||||
| タイトル | ||||||||||
| タイトル | Critical phenomenon in soft magnetic properties of giant magnetostrictive materials: Computer simulation | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||
| 資源タイプ | journal article | |||||||||
| 著者 |
Fukunaga, Hirotoshi
× Fukunaga, Hirotoshi
× Yamaguchi, Takayuki
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| 抄録 | ||||||||||
| 内容記述タイプ | Abstract | |||||||||
| 内容記述 | Dependence of magnetostrictive and magnetic properties on grain size was calculated numerically for an isotropic giant magnetostrictive material. The model magnet assumed is composed of 8000 cubic (Tb0.3Dy0.7)Fe2 grains. The direction of magnetization and the magnetostriction of each grain was determined for a given applied field under the consideration of the anisotropy, exchange, magnetoelastic, elastic, and Zeeman energies. Subsequently, the hysteresis loop and the magnetostriction versus applied field curve was obtained by varying the applied field. With decreasing the grain size D, the coercivity Hc and dλ/dH, where λ is the magnetostriction, decreased abruptly at D=25 nm. This improvement in soft magnetic properties exceeded the expected improvement from Herzer's calculation, in which Hc was proportional to D6. In order to study the significant improvement in detail, we calculated magnetic and magnetostrictive properties with varying magnetostriction and anisotropy constants. Resultantly, it was clarified that the critical phenomenon occurs when the total of elastic and magnetoelastic energies exceed the magnetic anisotropy energy in magnitude. (c)2006 American Institute of Physics | |||||||||
| 書誌情報 |
Journal of Applied Physics 巻 99, 号 8, p. 08M709-1-08M709-3, 発行日 2006-04 |
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| 出版者 | ||||||||||
| 出版者 | American Institute of Physics | |||||||||
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| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 00218979 | |||||||||
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| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AA00693547 | |||||||||
| DOI | ||||||||||
| 関連タイプ | isIdenticalTo | |||||||||
| 識別子タイプ | DOI | |||||||||
| 関連識別子 | 10.1063/1.2176311 | |||||||||
| 権利 | ||||||||||
| 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. The following article appeared in J. Appl. Phys. 99, 08M709 (2006) and may be found at http://link.aip.org/link/?JAPIAU/99/08M709/1 | |||||||||
| 著者版フラグ | ||||||||||
| 出版タイプ | VoR | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||
| 関係URI | ||||||||||
| 関連名称 | http://link.aip.org/link/?JAPIAU/99/08M709/1 | |||||||||
| 引用 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | Journal of Applied Physics, 99(8), 08M709; 2006 | |||||||||
