中国物理B ›› 2004, Vol. 13 ›› Issue (11): 1965-1968.doi: 10.1088/1009-1963/13/11/037

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The anisotropy of Gd－Fe exchange interaction for Gd2Fe17 and Gd2Fe17H3

许淑伟1, 金汉民1, 杜晓波1, 苏峰1, 闫羽2   

  1. (1)Department of Physics, Jilin University, Changchun 130023, China; (2)Department of Physics, Jilin University, Changchun 130023, China; State Key Laboratory for Superhard Materials, Jilin University, Changchun 130023, China
  • 收稿日期:2004-04-07 修回日期:2004-06-29 出版日期:2004-11-20 发布日期:2005-06-20
  • 基金资助:
    Project supported by Specialized Research Fund for the Doctoral Programme of Higher Education of China and the National Natural Science Foundation of China (Grant No 10304006).

The anisotropy of Gd－Fe exchange interaction for Gd2Fe17 and Gd2Fe17H3

Yan Yu (闫羽)ab, Xu Shu-Wei (许淑伟)a, Jin Han-Min (金汉民)a, Du Xiao-Bo (杜晓波)a, Su Feng (苏峰)a   

  1. a Department of Physics, Jilin University, Changchun 130023, China; b State Key Laboratory for Superhard Materials, Jilin University, Changchun 130023, China
  • Received:2004-04-07 Revised:2004-06-29 Online:2004-11-20 Published:2005-06-20
  • Supported by:
    Project supported by Specialized Research Fund for the Doctoral Programme of Higher Education of China and the National Natural Science Foundation of China (Grant No 10304006).

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摘要： The magnetization curves along the crystal axes for Gd_2Fe_{17} and Gd_2Fe_{17}H_3 were analysed based on the single-ion model. If the Gd－Fe exchange interaction has been taken as isotropic as usual, the fitted values of magneto-crystalline anisotropy of the Fe sublattices in Gd_2Fe_{17} and Gd_2Fe_{17}H_3 would become unreasonably different from those of the corresponding Y or Lu compounds. It was shown that the large difference is caused by the neglect of the anisotropy of the Gd－Fe exchange interaction.

关键词: magnetization curves, magnetic anisotropy, rare-earth compounds

Abstract: The magnetization curves along the crystal axes for Gd$_2$Fe$_{17}$ and Gd$_2$Fe$_{17}$H$_3$ were analysed based on the single-ion model. If the Gd－Fe exchange interaction has been taken as isotropic as usual, the fitted values of magneto-crystalline anisotropy of the Fe sublattices in Gd$_2$Fe$_{17}$ and Gd$_2$Fe$_{17}$H$_3$ would become unreasonably different from those of the corresponding Y or Lu compounds. It was shown that the large difference is caused by the neglect of the anisotropy of the Gd－Fe exchange interaction.

Key words: magnetization curves, magnetic anisotropy, rare-earth compounds

中图分类号:  (Magnetic anisotropy)

  • 75.30.Gw
75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects) 75.30.Et (Exchange and superexchange interactions) 75.50.-y (Studies of specific magnetic materials)