Emergence of coercivity in Sm(Fe                         0.8                         Co                         0.2                         )                         12                          thin films via eutectic alloy grain boundary infiltration

D. Ogawa; X. D. Xu; Y. K. Takahashi; T. Ohkubo; S. Hirosawa; K. Hono

doi:10.1016/j.scriptamat.2019.02.001

Emergence of coercivity in Sm(Fe _0.8 Co _0.2 ) ₁₂ thin films via eutectic alloy grain boundary infiltration

D. Ogawa, X. D. Xu, Y. K. Takahashi^*, T. Ohkubo, S. Hirosawa, K. Hono

^*この研究の対応する著者

研究成果: Article › 査読

28 被引用数 (Scopus)

抄録

The anisotropy field of the ThMn ₁₂ -type Sm(Fe _0.8 Co _0.2 ) ₁₂ compound is high. However, there is an absence of reports on sufficiently high coercivity for anisotropic permanent magnet application. In this study, we employed the grain boundary diffusion process to anisotropic Sm(Fe _0.8 Co _0.2 ) ₁₂ thin films. As-grown (001)-textured nanocrystalline film exhibit a coercivity of only 0.4 T. However, the grain boundary diffusion process via a Cu-Ga capping layer increases coercivity to 0.8 T. The coercivity exhibits relatively low temperature dependence when compared to that of Nd-Fe-B magnets.

本文言語	English
ページ（範囲）	140-144
ページ数	5
ジャーナル	Scripta Materialia
巻	164
DOI	https://doi.org/10.1016/j.scriptamat.2019.02.001
出版ステータス	Published - 2019 4月 15
外部発表	はい

ASJC Scopus subject areas

材料科学（全般）
凝縮系物理学
材料力学
機械工学
金属および合金

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10.1016/j.scriptamat.2019.02.001

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引用スタイル

Ogawa, D., Xu, X. D., Takahashi, Y. K., Ohkubo, T., Hirosawa, S., & Hono, K. (2019). Emergence of coercivity in Sm(Fe _0.8 Co _0.2 ) ₁₂ thin films via eutectic alloy grain boundary infiltration Scripta Materialia, 164, 140-144. https://doi.org/10.1016/j.scriptamat.2019.02.001

Emergence of coercivity in Sm(Fe _0.8 Co _0.2 ) ₁₂ thin films via eutectic alloy grain boundary infiltration . / Ogawa, D.; Xu, X. D.; Takahashi, Y. K. その他.

In: Scripta Materialia, Vol. 164, 15.04.2019, p. 140-144.

研究成果: Article › 査読

Ogawa, D, Xu, XD, Takahashi, YK, Ohkubo, T, Hirosawa, S & Hono, K 2019, ' Emergence of coercivity in Sm(Fe _0.8 Co _0.2 ) ₁₂ thin films via eutectic alloy grain boundary infiltration ', Scripta Materialia, vol. 164, pp. 140-144. https://doi.org/10.1016/j.scriptamat.2019.02.001

Ogawa D, Xu XD, Takahashi YK, Ohkubo T, Hirosawa S, Hono K. Emergence of coercivity in Sm(Fe _0.8 Co _0.2 ) ₁₂ thin films via eutectic alloy grain boundary infiltration Scripta Materialia. 2019 4月 15;164:140-144. doi: 10.1016/j.scriptamat.2019.02.001

Ogawa, D. ; Xu, X. D. ; Takahashi, Y. K. その他. / Emergence of coercivity in Sm(Fe _0.8 Co _0.2 ) ₁₂ thin films via eutectic alloy grain boundary infiltration In: Scripta Materialia. 2019 ; Vol. 164. pp. 140-144.

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abstract = " The anisotropy field of the ThMn 12 -type Sm(Fe 0.8 Co 0.2 ) 12 compound is high. However, there is an absence of reports on sufficiently high coercivity for anisotropic permanent magnet application. In this study, we employed the grain boundary diffusion process to anisotropic Sm(Fe 0.8 Co 0.2 ) 12 thin films. As-grown (001)-textured nanocrystalline film exhibit a coercivity of only 0.4 T. However, the grain boundary diffusion process via a Cu-Ga capping layer increases coercivity to 0.8 T. The coercivity exhibits relatively low temperature dependence when compared to that of Nd-Fe-B magnets. ",

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AU - Ohkubo, T.

AU - Hirosawa, S.

AU - Hono, K.

PY - 2019/4/15

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N2 - The anisotropy field of the ThMn 12 -type Sm(Fe 0.8 Co 0.2 ) 12 compound is high. However, there is an absence of reports on sufficiently high coercivity for anisotropic permanent magnet application. In this study, we employed the grain boundary diffusion process to anisotropic Sm(Fe 0.8 Co 0.2 ) 12 thin films. As-grown (001)-textured nanocrystalline film exhibit a coercivity of only 0.4 T. However, the grain boundary diffusion process via a Cu-Ga capping layer increases coercivity to 0.8 T. The coercivity exhibits relatively low temperature dependence when compared to that of Nd-Fe-B magnets.

AB - The anisotropy field of the ThMn 12 -type Sm(Fe 0.8 Co 0.2 ) 12 compound is high. However, there is an absence of reports on sufficiently high coercivity for anisotropic permanent magnet application. In this study, we employed the grain boundary diffusion process to anisotropic Sm(Fe 0.8 Co 0.2 ) 12 thin films. As-grown (001)-textured nanocrystalline film exhibit a coercivity of only 0.4 T. However, the grain boundary diffusion process via a Cu-Ga capping layer increases coercivity to 0.8 T. The coercivity exhibits relatively low temperature dependence when compared to that of Nd-Fe-B magnets.

KW - Coercivity

KW - Grain boundary diffusion process

KW - Permanent magnet

KW - SmFe

KW - ThMn structure

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Emergence of coercivity in Sm(Fe 0.8 Co 0.2 ) 12 thin films via eutectic alloy grain boundary infiltration

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ASJC Scopus subject areas

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Emergence of coercivity in Sm(Fe _0.8 Co _0.2 ) ₁₂ thin films via eutectic alloy grain boundary infiltration