二维稀磁 Ising 亚铁磁体热力学性质  

The Thermodynamical Properties of Two Dimensional Diluted Ising Ferrimagnet

作　　者：辛子华[1] 魏国柱[1] 刘天时[1] 

机构地区：[1]东北大学理学院

出　　处：《东北大学学报（自然科学版）》1997年第4期439-443,共5页Journal of Northeastern University(Natural Science)

基　　金：辽宁省自然科学基金

摘　　要：用相关有效场方法分别计算了具有峰窝点阵和平方点阵的二维稀磁混自旋Ｉｓｉｎｇ系统的内能和比热．结果表明在相同稀磁浓度下，具有平方点阵的系统居里温度高于具有蜂窝点阵的系统的居里温度．二者在居里温度点发生的相变皆为二级相变．平方点阵系统在较大温度范围内呈现亚铁磁性．The internal energy and specific heat are calculated in the frame work of effective field theory with correlations for the two dimensional diluted mixed spin Ising system on honeycomb lattice and square lattice,respectively. The Curie temperature for z =4 system is higher than that for z =3 system. The transition point is of second order for both system. The ferrimagnetic phase exists in a large range of temperature.

关 键 词：稀磁Ising系统 居里温度 亚铁磁体 力学性质 

分 类 号：O482.54[一般工业技术—材料科学与工程]