Mean-Field Studies of a Mixed Spin-3/2 and Spin-2 and a Mixed Spin-3/2 and Spin-5/2 Ising System with Different Anisotropies  

作　　者：WEI Guo-Zhu MIAO Hai-Ling 

机构地区：[1]College of Sciences, Northeastern University, Shenyang 110004, China [2]International Center for Material Physics, Academia Sinica, Shenyang 110015, China

出　　处：《Communications in Theoretical Physics》2009年第4期756-760,共5页理论物理通讯（英文版）

摘　　要：The magnetic properties of a mixed spin-3/2 and spin-2 and a mixed spin-3/2 and spin-5/2 Ising ferromag- netic system with different anisotropies are studied by means of mean-field theory （MFT）. The dependence of the phase diagram on single-ion anisotropy strengths is studied too. In the mixed spin-3/2 and spin-2 Ising model, besides the second-order phase transition, the first order-disorder phase transition and the tricritical line are found. In the mixed spin-3/2 and spin-5/2 Ising model, there is no first-order transition and trieritical line.

关 键 词：mixed spin Ising system mean-field theory phase transition 

分 类 号：O413[理学—理论物理] O414.21[理学—物理]