Molecular Field Theory Analysis of Intermetallic Compounds Sm1-xErxFe2 (x=0.7,0.4,0.3,0.1)
来源期刊：JOURNAL OF RARE EARTHS2004年增刊第1期
论文作者：Zhang Jingjing Wang Huijie Chen Wei Zhang Zhongwu Zhu Minggang Li Wei
Key words：intermetallic compound; Molecular field theory; Sm1-xErxFe2;
Abstract: The temperature dependence of magnetization of intermetallic compounds molecular field theory (MFT)were studied and the results were consistent with the experimental data, so the Curie temperatures were obtained.The exchange field HMn (T) and HGd (T) were presented.The saturation magnetization and the Curie temperature Tc decrease with the increasing Er content.But the rare earth exchange field strengthens, which leads to increasing magnetocrystalline anisotropy.The exchange coupling constants JFeFe, JFer, Jrr were caculated.JFeFe dominates the three kinds of interaction, implying that the magnetic interaction is dominated by the exchange 3d electrons.
Zhang Jingjing1，Wang Huijie2，Chen Wei1，Zhang Zhongwu1，Zhu Minggang1，Li Wei2
(1.Department of Physics, Hebei Normal University, Shijiazhuang 050016, China;
2.Division of Functional Materials, Central Iron & Steel Research Institute, Beijing 100081, China)
Abstract:The temperature dependence of magnetization of intermetallic compounds molecular field theory (MFT)were studied and the results were consistent with the experimental data, so the Curie temperatures were obtained.The exchange field HMn (T) and HGd (T) were presented.The saturation magnetization and the Curie temperature Tc decrease with the increasing Er content.But the rare earth exchange field strengthens, which leads to increasing magnetocrystalline anisotropy.The exchange coupling constants JFeFe, JFer, Jrr were caculated.JFeFe dominates the three kinds of interaction, implying that the magnetic interaction is dominated by the exchange 3d electrons.
Key words:intermetallic compound; Molecular field theory; Sm1-xErxFe2;
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