ヘテログラニュラー高電気抵抗膜の相分離と磁性

• 加藤 和照

  東北大学科学計測研究所

• 武野 幸雄

  東北大学科学計測研究所

• 北上 修

  東北大学科学計測研究所

• 島田 寛

  東北大学科学計測研究所

書誌事項

タイトル別名

• Phase Separation and Magnetism of Highly Resistive Magnetic Films with Hetero-granular Structures.
• ヘテログラニュラー コウ デンキ テイコウ マク ノ ソウ ブンリ ト ジセイ

抄録

The relationship between magnetic softness and the precipitation process of highly resistive soft magnetic TM-M-X [TM: Fe, Co, M: Metal, X: O, N] films was investigated.The as-sputtered and incompletely phase-separated state of Fe-Al-O, Fe-Sm-O, and Fe-V-O films show magnetic softness. This soft magnetic property is attributed to the exchange coupling of neighboring magnetic crystals through the intergranular phase. However, Fe-B-N and Co-Sm-O films show perpendicular anisotropy over the whole annealing temperature range, because it is easy to separate TM-X and M-X owing to their extremely high diffusion rate and the large difference between their Gibbs free energies (−ΔG°_diff). These results indicate that the small diffusion coefficient of M and X in TM (D), the large critical radii of crystal nucleation of M-X compounds (r*), the high melting points of M-X compounds (T_m) and the large −ΔG°_diff. are essential factors in the formation of stable hetero-granular structures with both magnetic softness and high resistivity.

収録刊行物

• 日本応用磁気学会誌

  日本応用磁気学会誌 21 (8), 1088-1093, 1997

  公益社団法人 日本磁気学会

キーワード

• highly resistive soft magnetic films
• perpendicular anisotropy
• exchange coupling
• Gibbs free energy
• diffusion coefficient

詳細情報

• CRID: 1390001205090840448
• NII論文ID: 110002810044
• NII論文ID: 130004478187
• NII書誌ID: AN0031390X
• DOI: 10.3379/jmsjmag.21.1088
• COI: 1:CAS:528:DyaK2sXms1Wnsr4%3D
• ISSN: 18804004
• ISSN: 02850192
• NDL書誌ID: 4266116
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4266116
• Web Site: http://dl.ndl.go.jp/info:ndljp/pid/10463651
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • NDL-Digital
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可