Ｃｏフェライトアモルファス膜のスピングラス挙動

• 奥野 志保

  （株）東芝総合研究所

• 橋本 進

  （株）東芝総合研究所

• 猪俣 浩一郎

  （株）東芝総合研究所

• 森本 せつ

  お茶の水女子大学理学部

• 伊藤 厚子

  お茶の水女子大学理学部

書誌事項

タイトル別名

• Spin-glass behavior in Co-ferrite amorphous films.

抄録

Amorphous Co-ferrite thin films not containing glass formers were prepared by ion beam sputter deposition. Their magnetic properties were invetigated by means of low field dc magnetization and ac susceptibility measurements, which gave evidence of spin glass behavior. Temperature dependence of magnetization in an external field of 50 Oe exhibited an irreversibility below nearly room temperature, which decreased with increasing field. A cusp corresponding to spin freezing temperature was observed at 284 K in ac susceptibility measured at 80 Hz, 1 Oe. Below this temperature, relaxation of thermoremanent magnetization was observed. Besides this transition at 284 K, a sharp peak which suggests another transition was observed at 86 K in ac susceptibility. It is considered that the spin glass ordering with a high spin freezing temperature is mainly caused by amorphousization for strong super-exchange interactions.

収録刊行物

• 日本応用磁気学会誌

  日本応用磁気学会誌 14 (2), 213-216, 1990

  公益社団法人 日本磁気学会

キーワード

• amorphous
• CoFe₂O_<i>x</i>
• thin film
• spin glass
• freezing temperature
• magnetization
• ac susceptibility
• relaxation

詳細情報

• CRID: 1390282680066665728
• NII論文ID: 130004477741
• DOI: 10.3379/jmsjmag.14.213
• COI: 1:CAS:528:DyaK3MXptlOnsw%3D%3D
• ISSN: 18804004
• ISSN: 02850192
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可