γ-Fe<SUB>2</SUB>O<SUB>3</SUB>の圧縮による磁気的性質の変化

• 信岡 聰一郎

  工業技術院大阪工業技術試験所

• 阿度 和明

  工業技術院大阪工業技術試験所

• 安藤 徳夫

  工業技術院大阪工業技術試験所

書誌事項

タイトル別名

• Variations of Magnetic Properties with Compression of γ-Fe<SUB>2</SUB>O<SUB>3</SUB>
• ガンマ-Fe2O3 ノ アッシュク ニ ヨル ジキテキ セイシツ ノ ヘンカ

抄録

Some magnetic properties of γ-Fe₂O₃ powders for magnetic recording have been measured as a function of packing density.<BR>The samples were prepared by the methods in the previous reports, all having different particle size and shape. Histeresis loop, coercive force _BH_C and induction B_m were measured on these samples by a ballistic method at the coefficient of packing density over the range from 10% to 60%.<BR>The results were as follows : (1) The coercive force_BH_C was strongly influenced by the average length to diameter ratio of the particle. (2) The _BH_C values of single domain particles decreased with increasing packing density and the changes were almost linear. The slope of _BH_C packing density curves increased with increasing axial ratio. The decrease. of _BH_C with the compression was supposed to be affected by the interaction among nearby particles and by the crushing of the particles. (3) The induction B_m increased with increasing packing density, and the these relations being almost linear.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 13 (4), 192-196, 1966

  一般社団法人 粉体粉末冶金協会

キーワード

• Materials Chemistry
• Metals and Alloys
• Industrial and Manufacturing Engineering
• Mechanical Engineering

詳細情報

• CRID: 1390282681285945472
• NII論文ID: 10003590750
• NII論文ID: 130000817541
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.13.192
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 8444152
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8444152
• データソース種別:
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• 抄録ライセンスフラグ: 使用不可