Magnetic properties and phase diagrams of a bilayer spin-3/2 Ising model

Abstract

The magnetic properties and phase diagrams of a bilayer spin-3/2 Ising model is studied, under the effect of crystal field, using the mean field (MF) theory and the Monte Carlo (MC) simulations. The ground state phase diagrams in the (J_s1 / J, ∆_s1 / J) and (J_s2 / J, ∆_s1 / J) planes are determined analytically. On the other hand, the magnetization and critical temperature is studied. The results found by the two methods are in good agreement with the ground state phase diagram. It was found that the critical temperature calculated by Monte Carlo simulations is less than that one obtained by the mean field method, for both positive and negative crystal field acting on each layer of the film.