PLD法を用いたマイクロロータ用等方性Nd-Fe-B系厚膜磁石の作製
PLD法を用いたマイクロロータ用等方性Nd-Fe-B系厚膜磁石の作製
カテゴリ: 論文誌(論文単位)
グループ名: 【A】基礎・材料・共通部門
発行日: 2012/10/01
タイトル(英語): Isotropic Nd-Fe-B Thick-film Magnets Applied for Micro-rotors Prepared by PLD Method
著者名: 中野 正基(長崎大学),板倉 賢(九州大学),柳井 武志(長崎大学),山下 文敏((株) ミネベア),福永 博俊(長崎大学)
著者名(英語): Masaki Nakano (Nagasaki University), Masaru Itakura (Kyushu University), Takeshi Yanai (Nagasaki University), Fumitoshi Yamashita (Minebea Co. Ltd.), Hirotoshi Fukunaga (Nagasaki University)
キーワード: 厚膜磁石,Nd-Fe-B系磁石,マイクロロータ,PLD法 thick film magnets,Nd-Fe-B magnets,micro rotors,PLD method
要約(英語): The flexibility of magnetization of isotropic thick-film magnets enabled us to enhance the torque of a millimeter-size motor comprising a multi-polar magnetized rotor compared to the torque of a miniaturized motor using an anisotropic Nd-Fe-B sintered magnet. In order to upgrade the torque of the small motor further, increase in the remanence value of the isotropic films is indispensable. In this study, therefore, we prepared nano-composite Nd-Fe-B thick-films by using a high-speed PLD (Pulsed Laser Deposition) method with the deposition rate of approximately 40μm/h. Resultantly, use of additive (Zr or Nb) was effective to enhance the coercivity value of Nd-Fe-B thick-film magnets with Nd-poor composition, however it was difficult to increase the values of remanence. In order to apply the thick films to a micro-rotor, investigation on several experiments related to mechanical property was also carried out.
本誌: 電気学会論文誌A(基礎・材料・共通部門誌) Vol.132 No.10 (2012) 特集(Ⅰ):新機能性ナノスケール磁性材料の作製・評価 特集(Ⅱ):イノベーションを支える最新の計測技術2012
本誌掲載ページ: 844-848 p
原稿種別: 論文/日本語
電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/132/10/132_844/_article/-char/ja/
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