Magnetic Properties and Molecular Field Analysis of （ Ce, Nd） 2 （Fe, Si, Mn） 17 Compounds
摘要
The temperature-dependent magnetization of the (Ce,Nd)2(Fe,Si,Mn)17 intermetallic compounds were measured and analyzed by molecular field theory (MFT). The relationship between TC and the intrasublattice coupling interactions was discussed. The two-sublattice MFT model can well describe the temperature dependence of the magnetization for all the compounds investigated. Ce ion in (Ce,Nd)2Fe17 compounds does not simply dilute the magnetic structure, but is likely present in a mixed-valence state. The substitution of Si for Fe strongly raises TC and the mean Fe moment remains unchanged for Ce2(Si,Fe)17 compounds, and the 3d exchange coupling constant JFF increases linearly. Mn decreases TC of Nd2(Mn, Fe)17 compound by reducing JFF.
引用本文（GB/T 7714）
高小玫, 周寿增, 张茂才, 等. Magnetic Properties and Molecular Field Analysis of （ Ce, Nd） 2 （Fe, Si, Mn） 17 Compounds[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2002.
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