Theory of the Random Magnetic Mixture. I Ising System
Theory of the Random Magnetic Mixture. I Ising System
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随机磁性混合物理论。
DOI：
10.1143/ptp.52.1124
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发表时间：
1974
期刊：
影响因子：
--
通讯作者：
F. Matsubara
中科院分区：
文献类型：
--
作者：
F. Matsubara
本文用分布函数的形式给出了几种伊辛自旋的随机磁混合理论。由n阶非线性积分方程确定分布函数，其中n是自旋种类数，利用这一理论研究了含有两种磁性原子的蜂窝晶格的磁性。铁磁相、铁磁相和反铁磁相是相对于这些原子的类型和浓度获得的。同时也证明了在没有自发磁化的情况下，出现具有无限磁化率的新相的可能性.详细研究了各相的磁化过程和相变。
A theory of the random magnetic mixture of some kinds of Ising spins is formulated in terms of distribution functions which are introduced for the thermal averages of each kind of spins. The distribution functions are determined from a simultaneous non-linear integral equation of ordern, wherenis the number of kinds of spins.By the use of this theory, the magnetic properties of a honeycomb lattice with two kinds of magnetic atoms are investigated. The ferromagnetic phase, the ferromagnetic phase and the antiferromagnetic phase are obtained with respect to the types and concentrations of those atoms. The possibilityof a new phase with the infinite susceptibility without the spontaneous magnetization is also conjectured. The magnetization process and phase transition in each phase are studied in detail.