Journal of Linyi University
The Influence of Nearest-neighbor Exchange Interaction Parameter on Mixed Spin System
Xin Zhang
Abstract
Using the recursion method,the phase transition and the thermodynamic behavior of the mixed spin-1/2 and spin-2\3 Ising system on the two-fold Cayley tree are studied for the ferromagnetic and ferrimagnetic cases,respectively.The relations of sublattice magnetizations MA,MB and the total magnetization M with the temperature are obtained by the numerical calculation.After comparing the results of the two cases,it is found that the behavior of M is similar to that of MA and that the sublattice magnetizations on the temperature differ between the ferromagnetic and ferrimagnetic cases.There is no tricritical behavior for the two cases.