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Strain-induced magnetic anisotropy via the Jahn-Teller effect and the magnetoelastic coupling of tetragonally distorted (Cu,Co)Fe2O4 particles
http://hdl.handle.net/2241/00159214
http://hdl.handle.net/2241/00159214f5291df0-550c-4d61-948a-2dac68c33c79
名前 / ファイル | ライセンス | アクション |
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JMMM_489-165380 (660.8 kB)
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Item type | Journal Article(1) | |||||
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公開日 | 2019-12-19 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Strain-induced magnetic anisotropy via the Jahn-Teller effect and the magnetoelastic coupling of tetragonally distorted (Cu,Co)Fe2O4 particles | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
喜多, 英治
× 喜多, 英治× 柳原, 英人× Latiff, Hawa× Kishimoto, Mikio× Inoue, Jun-ichiro× Devillers, Thibaut |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We investigated on the strain-induced magnetic anisotropy via the Jahn-Teller (JT) distortion of Cu2+ ions and the magnetoelastic coupling of Co2+ ions in Cu1−xCoxFe2O4 particles. The ideal composition for the tetragonalization of (Cu,Co)Fe2O4 is confirmed for x in the range of 0 < x < 0.15. The tetragonally distorted spinel structured (Cu,Co)Fe2O4 particles indicate tetragonal distortion of up to 5.6% as a consequence of the JT effect, and increasing the Co content suppressed the cooperative JT distortion. In-field Mössbauer study revealed a 10% Fe-rich B site due to the anti-site defects. The saturation magnetization increases with x and varies from 26.9 to 36.8 Am2/kg. The coercivity ranges from 68 to 175 kA/m and showed a maximum at x = 0.1. The maximum anisotropy field, Hk estimated from torque measurement is 1590 kA/m (20 kOe), with the magnetic anisotropy constant K = 0.14 M J/m3. The maximum values of Hc and Hk are explained by the mechanism of magnetic anisotropy from both the lattice distortion of Cu2+ and the anisotropy sites of Co2+. We showed that the magnetoelastic theory is applicable qualitatively to explain the large anisotropy obtained in the tetragonally distorted particles. | |||||
書誌情報 |
en : Journal of Magnetism and Magnetic Materials 巻 489, p. 165380, 発行日 2019-11 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 03048853 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00701394 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.jmmm.2019.165380 | |||||
権利 | ||||||
権利情報 | © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | |||||
著者版フラグ | ||||||
値 | author | |||||
出版者 | ||||||
出版者 | Elsevier |