ON THE ORIGIN OF THE CURIE-WEISS LAW OF THE MAGNETIC-SUSCEPTIBILITY IN ITINERANT ELECTRON FERROMAGNETISM
ON THE ORIGIN OF THE CURIE-WEISS LAW OF THE MAGNETIC-SUSCEPTIBILITY IN ITINERANT ELECTRON FERROMAGNETISM
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DOI：
10.1143/jpsj.55.3553
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发表时间：
1986-10-01
影响因子：
1.7
通讯作者：
TAKAHASHI, Y
中科院分区：
文献类型：
--
作者：
TAKAHASHI, Y
本文从局域自旋涨落幅度几乎守恒的观点出发，讨论了铁磁材料中普遍存在的磁化率居里-外斯定律的起源。一个完全一致的处理，它可以处理有序相和顺磁相的平等地位。在弱铁磁极限的情况下，从一个新的角度修正了Rhodes-Wohlfarth图。在有序相，所观察到的磁化曲线的系统趋势解释与动态自旋涨落谱的性质。导出了各种磁测数据之间的一些新的有趣关系，并与实验进行了比较。本文还讨论了Fe和Ni的磁化率随温度的变化关系。
The origin of the Curie-Weiss law of the magnetic susceptibility universally observed in ferromagnetic materials is discussed from a point of view that the local spin fluctuation amplitude is almost conserved. A fully consistent treatment is presented which can deal with both the ordered phase and the paramagnetic phase on an equal footing. In the case of weakly ferromagnetic limit, Rhodes-Wohlfarth plot is revised from a new stand point. In the ordered phase, observed systematic trends of magnetization curves are explained in connection with the nature of dynamical spin fluctuation spectra. Some new interesting relations among various magnetic data are derived and compared with experiments. Temperature dependence of magnetic susceptibilities of Fe and Ni is also discussed.