Fabrication and Magnetic Properties of Exchange-Coupled Nd-Fe-B/Fe Nanocomposite Thin Films
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概要
- 論文の詳細を見る
Thin films which consist of randomly distributed Nd_2Fe_<14>B and Fe phases were fabricated on glass substrates by rf sputtering. With increasing a number of Fe chips on Nd-Fe-B target from 0 to 6, the remanence B_r of the films increased from 6.4 to 15.6kG, while the coercivity _iH_c reduced from 2.1 to 0.34 kOe at room temperature after annealing at 873 K for 10 min. In the case of Nd_<4.3>Fe_<88.4>B_<7.3> film, fabricated with 4Fe chips, B_r=12kG and _iH_c=13 kOe were obtained and typical spring-back behavior was observed. Based on the temperature dependence of mangetization, volume fraction of α-Fe phase was estimated to be V_<Fe<=67%. These results indicate the exchange coupling between Nd_2Fe_<14>B and Fe phases. The _iH_c value of the V_<Fe>=67% film is larger than that of recently fabricated Nd-Fe-B/α-Fe multilayer films with V_<Fe>=40〜50%.
- 社団法人日本磁気学会の論文
- 1999-01-20
著者
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Miyazaki T.
Department Of Applied Physics Graduate School Of Engineering Tohoku University
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Kato H.
Department Of Physics Tohoku University
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SAKUMA A.
Hitachi Metals, Tohoku Univ.
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Ishizone M.
Department Of Applied Physics Graduate School Of Engineering Tohoku University
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Shindo M.
Hitachi Metals, Ltd.
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Miyazaki T
Tohoku University Dept. Of Applied Physics
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Kato H.
Department Of Orthopedic Surgery Kushiro Rousai Hospital
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Kato H.
Department Of Biology College Of General Education Nagoya City University
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