Thermodynamical Properties of Spin-3／2 Ising Model in a Longitudinal Random Field with Crystal Field  

作　　者：LIANGYa-Qiu WEIGuo-Zhu ZHANGHong SONGGuo-Li 

机构地区：[1]DepartmentofPhysics,LiaoningUniversity,Shenyang110036,China [2]CollegeofSciences,NortheasternUniversity,Shenyang110006,China [3]MachineryResearchInstituteofLiaoningProvince,Shenyang110032,China

出　　处：《Communications in Theoretical Physics》2004年第3X期467-470,共4页理论物理通讯（英文版）

摘　　要：A theoretical study of a spin-3/2 Ising model in a longitudinal random field with crystal field is studiedby using of the effective-field theory with correlations. The phase diagrams and the behavior of the tricritical point areinvestigated numerically for the honeycomb lattice when the randorm field is bimodal. In particular, the specific heatand the internal energy are examined in detail for the system with a crystal-field constant in the critical region wherethe ground-state configuration may change from the spin-3/2 state to the spin-1/2 state. We find many interestingphenomena in the system.

关 键 词：晶体场 随机场 自旋态 RFIM 哈密顿系统 高斯分布 晶体结构 

分 类 号：O764[理学—晶体学]