稀疏晶场作用的键无规BCM的相变特性和自发磁化  

Phase transitions and spontaneous magnetization properties of Anisotropy dilution and random bond Blume-Capel Model

作　　者：朱海霞[1] 

机构地区：[1]盐城师范学院物理系,江苏盐城224002

出　　处：《苏州大学学报（自然科学版）》2006年第2期66-70,共5页Journal of Soochow University(Natural Science Edition)

摘　　要：在有效场框架下,就三维稀疏晶场作用的键无规BC模型(BCM)的相图进行了研究。具体分析了三临界点(TCP)随稀疏晶场和键无规这两种无序因子的变化关系及相变曲线呈现的一些新特征,给出相应的相图,并给出自发磁化曲线。The phase transitions and spontaneous magnetization properties of Anisotropy dilution and random bond Blume-Capel Model （BCM） have been studied within the framework of an effective field theory. The effect of the random bond and anisotropy dilution on the phase diagrams is discussed. The trajectory of the tricritical point （TCP） in the phase space as a function of two different disorder parameters is presented. The phase diagrams and the curve of spontaneous magnetization are presented.

关 键 词：BC模型 三临界点 自发磁化 

分 类 号：O414.13[理学—理论物理]