Shape Anisotropy Evolution of Co Grains in Cu-30at%Co Alloy by Annealing under Magnetic Field

• Yasuda Hideyuki

  Department of Adaptive Machine Systems, Osaka University

• Yamamoto Yasutaka

  Department of Adaptive Machine Systems, Osaka University

• Ohnaka Itsuo

  Department of Adaptive Machine Systems, Osaka University

• Kishio Kohji

  Department of Applied Chemistry, University of Tokyo

抄録

The shape change of the fcc-Co grains during the coarsening process was examined by using the Cu-30at%Co alloys. The fine Co-rich particles were uniformly distributed in the rapidly solidified alloys when the cooling rate was sufficiently large to prevent the dendritic growth of the primary Co phase. The influence of the magnetic field on the shape change of the Co grains was clearly observed when the rapidly solidified particles were annealed at 1173 K under 10 T. The average angle between the long-axis and the magnetic field direction at 10 T is 15 degrees smaller than the average value at 0 T. The coarsening model suggested that the shape magnetic anisotropy energy acts as a driving force of the coarsening in the region that the Co grain size is several μm. The static magnetic energy due to the shape anisotropy has an alternative potential to produce the aligned structure.

収録刊行物

• ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ

  ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ 43 (6), 869-876, 2003

  一般社団法人 日本鉄鋼協会

キーワード

• magnetic anisotropy
• shape anisotropy
• coarsening
• copper-cobalt alloy

詳細情報

• CRID: 1390282681430254976
• NII論文ID: 10014448290
• NII書誌ID: AA10680712
• DOI: 10.2355/isijinternational.43.869
• ISSN: 13475460
• ISSN: 09151559
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational1989/43/6/43_6_869/_pdf
• 本文言語コード: en
• データソース種別:
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  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可