铁磁键稀疏Blume-Capel模型相图的Monte Carlo研究  

MONTE CARLO STUDY ON THE PHASE DIAGRAM OF THE FERROMAGNETIC BOND-DILUTE BLUME-CAPEL MODEL

作　　者：张国民[1] 杨传章[1] 

机构地区：[1]苏州大学物理系,苏州215006

出　　处：《物理学报》1993年第1期128-133,共6页Acta Physica Sinica

摘　　要：本文应用Monte Carlo方法求得铁磁键稀疏平方点阵的Blume-Capel模型的相图。利用有限尺寸的标度理论,得到晶场为零时的相变温度,并同其他方法所得的结果作了比较。同时用Monte Carlo方法确定了键稀疏时三临界点的值对键浓度的依赖关系。We have used the Monte Carlo method to study the phase diagram of the ferromagnetic bond-dilute Blume-Capel model, combined with the finite-size scalar theory, and obtained the transition temperatures in zero crystal field, Comparison is made between the results of this simulation and other methods. The influence of the bond-dilute concentration on the tricriti-cal points is determined using the Monte Carlo method.

关 键 词：铁磁材料 键稀疏 相图 蒙特卡罗法 

分 类 号：O731[理学—晶体学]