Sm-Co系磁石の磁区構造へ酸素・炭素不純物が与える影響
Sm-Co系磁石の磁区構造へ酸素・炭素不純物が与える影響
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: 2021/02/01
タイトル(英語): Influence of Oxygen or Carbon Impurities on Domain Structure of Sm-Co Magnets
著者名: 竹澤 昌晃(九州工業大学 大学院工学研究院),坂倉 健治(九州工業大学 大学院工学研究院),田中 隼(九州工業大学 大学院工学研究院),町田 浩明((株)トーキン),藤原 照彦((株)トーキン)
著者名(英語): Masaaki Takezawa (Faculty of Engineering, Kyushu Institute of Technology), Kenji Sakakura (Faculty of Engineering, Kyushu Institute of Technology), Jun Tanaka (Faculty of Engineering, Kyushu Institute of Technology), Hiroaki Machida (Tokin Corporation), T
キーワード: 磁区,Sm-Co磁石,酸素不純物,炭素不純物_x000D_ magnetic domain,Sm-Co magnets,oxygen impurities,carbon impurities
要約(英語): Magnetic domain structure changes during a demagnetization process of 2-17 type Sm-Co magnets with different amounts of carbon and oxygen were observed using a Kerr effect microscope. Moreover, the effects of the excess carbon and excess oxygen compositions on the demagnetization process of the magnets were investigated. As a result, it is found that in the Sm-Co magnets with high carbon and oxygen composition, the nucleation of reversal magnetic domains inside grains during the demagnetization process easily occurs at a lower demagnetization field strength. The nucleation of the reversal magnetic domain in grains causes a decrease in a squareness ratio of a demagnetization curve.
本誌: 電気学会論文誌A(基礎・材料・共通部門誌) Vol.141 No.2 (2021) 特集:ナノスケール磁性体の構造・組織解析と創製に関する動向と展望
本誌掲載ページ: 133-138 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/141/2/141_133/_article/-char/ja/
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