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Chinese Physics, 2004, Vol. 13(11): 1965-1968    DOI: 10.1088/1009-1963/13/11/037
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

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
a Department of Physics, Jilin University, Changchun 130023, China; b State Key Laboratory for Superhard Materials, Jilin University, Changchun 130023, China
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.
Keywords:  magnetization curves      magnetic anisotropy      rare-earth compounds  
Received:  07 April 2004      Revised:  29 June 2004      Accepted manuscript online: 
PACS:  75.30.Gw (Magnetic anisotropy)  
  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)  
Fund: 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).

Cite this article: 

Yan Yu (闫羽), Xu Shu-Wei (许淑伟), Jin Han-Min (金汉民), Du Xiao-Bo (杜晓波), Su Feng (苏峰) The anisotropy of Gd-Fe exchange interaction for Gd2Fe17 and Gd2Fe17H3 2004 Chinese Physics 13 1965

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