具有Fe_4N结构双子格与四子格BC模型的比较研究  

Comparative Studies of Two-sublattice and Four-sublattice BC Model with Fe_4N Structure

作　　者：许星光[1] 赵杰[1] 宋岱才[1] 

机构地区：[1]辽宁石油化工大学理学院,抚顺113001

出　　处：《科学技术与工程》2010年第13期3041-3044,3049,共5页Science Technology and Engineering

基　　金：教育部博士点基金项目(20040145019)资助

摘　　要：以Fe4N结构为原型,构建了双子格和四子格两种BC模型。采用平均场理论,推导出两种系统的磁矩和自由能计算公式,得出了两种系统的磁矩公式和自由能公式完全等价的结论。Considering Fe4N structure as prototype,BC models in two ways of two sublattice and four sublattice were built by using the mean-field theory.The calculation formula of magnetization and free energy were deduced in these two systems.The conclusion is drawn that the two systems is equivalent by comparing the formula of magnetization and free energy.

关 键 词：平均场理论 Fe4N结构 双子格 四子格 磁矩 自由能 

分 类 号：O414.13[理学—理论物理]