Phase Diagram of Transverse Spin-2 Ising Model with Longitudinal Crystal Field  

作　　者：ZHAO Jie XU Xing-Guang WEI Guo-Zhu 

机构地区：[1]School of Science, Liaoning Sbihua University, Fushun 113001, China [2]School of Science, Northeastern University, Shengyang 110006, China

出　　处：《Communications in Theoretical Physics》2009年第7期163-167,共5页理论物理通讯（英文版）

基　　金：Ph.D.Programs Foundation of Ministry of Education of China under Grant No.20040145019

摘　　要：The transverse spin-2 Ising ferromagnetic model with a longitudinal crystal field is studied within themean-field theory.The phase diagrams and magnetization curves are obtained by diagonalizing the Hamiltonian H_i ofthe Ising system numerically,and the first order-order phase transitions,the first order-disorder phase transitions,andthe second-order phase transitions are discussed in details.Reentrant phenomena occur when the value of the transversefield is not zero and the reentrant diagram is given.

关 键 词：transverse spin-2 Ising model phase diagram first order-order phase transition reentrant phenomenon 

分 类 号：O414[理学—理论物理] TN915.07[理学—物理]