Magnetic properties of Nd-Fe-B/α-Fe multi-layered thick film magnets

H. Fukunaga, H. Nakayama, T. Kamikawatoko, T. Yanai, M. Nakano, F. Yamashita, S. Ohta, Masaru Itakura, Minoru Nishida

研究成果: ジャーナルへの寄稿記事

3 引用 (Scopus)

抄録

Nd-Fe-B/α-Fe multi-layered nanocomposite film-magnets were prepared from a rotating Nd 2.6 Fe 14 B/α-Fe composite target by the pulse laser deposition method with a Nd-YAG laser (λ=355 nm). The prepared film-magnets were composed of approximately 800 layers with the thickness of about several tens nanometre, and exhibited hard magnetic properties after annealing. The laser power for the ablation of the target was varied between 3 and 7 W, and it was found that the composition, magnetic properties, and the surface roughness of the prepared films depend on the laser power. A reduction in the laser power caused increases in remanence and the maximum energy product (BH) max as well as decreases in Nd content and coercivity of the films. All the samples had Nd-poor compositions compared with that of the Nd 2.6 Fe 14 B target and the Nd-contents of the films deposited with laser power of 3 W were less than that of the stoichiometric composition of Nd 2 Fe 14 B. The highest (BH) max and remanence values were obtained for a film deposited with laser power of 3 W, and were 90 kJ/m 3 and 1.0 T, respectively. The obtained high remanence value is discussed from the viewpoint of the remanence enhancement as well as the large saturation magnetization of α-Fe.

元の言語英語
記事番号012027
ジャーナルJournal of Physics: Conference Series
266
発行部数1
DOI
出版物ステータス出版済み - 1 1 2011

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thick films
magnets
remanence
magnetic properties
lasers
laser deposition
ablation
coercivity
YAG lasers
nanocomposites
surface roughness
saturation
magnetization
annealing
composite materials
augmentation
products
pulses
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

これを引用

Fukunaga, H., Nakayama, H., Kamikawatoko, T., Yanai, T., Nakano, M., Yamashita, F., ... Nishida, M. (2011). Magnetic properties of Nd-Fe-B/α-Fe multi-layered thick film magnets. Journal of Physics: Conference Series, 266(1), [012027]. https://doi.org/10.1088/1742-6596/266/1/012027

Magnetic properties of Nd-Fe-B/α-Fe multi-layered thick film magnets. / Fukunaga, H.; Nakayama, H.; Kamikawatoko, T.; Yanai, T.; Nakano, M.; Yamashita, F.; Ohta, S.; Itakura, Masaru; Nishida, Minoru.

:: Journal of Physics: Conference Series, 巻 266, 番号 1, 012027, 01.01.2011.

研究成果: ジャーナルへの寄稿記事

Fukunaga, H, Nakayama, H, Kamikawatoko, T, Yanai, T, Nakano, M, Yamashita, F, Ohta, S, Itakura, M & Nishida, M 2011, 'Magnetic properties of Nd-Fe-B/α-Fe multi-layered thick film magnets', Journal of Physics: Conference Series, 巻. 266, 番号 1, 012027. https://doi.org/10.1088/1742-6596/266/1/012027
Fukunaga H, Nakayama H, Kamikawatoko T, Yanai T, Nakano M, Yamashita F その他. Magnetic properties of Nd-Fe-B/α-Fe multi-layered thick film magnets. Journal of Physics: Conference Series. 2011 1 1;266(1). 012027. https://doi.org/10.1088/1742-6596/266/1/012027
Fukunaga, H. ; Nakayama, H. ; Kamikawatoko, T. ; Yanai, T. ; Nakano, M. ; Yamashita, F. ; Ohta, S. ; Itakura, Masaru ; Nishida, Minoru. / Magnetic properties of Nd-Fe-B/α-Fe multi-layered thick film magnets. :: Journal of Physics: Conference Series. 2011 ; 巻 266, 番号 1.
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