Effects of an external magnetic field on a mixed spin-3/2 and spin-5/2 Ising ferrimagnet: A Monte Carlo study

摘要: The magnetic properties of a ferrimagnetic mixed spin- and Ising model with two crystal fields, in longitudinal field, are studied by Monte Carlo simulations. role the different interactions Hamiltonian is explored. We investigate thermal variations total magnetization present phase diagrams. Depending on region parameter space, we find some interesting phenomena such as compensation temperatures, discontinuities magnetizations. that when an external field present, due to simultaneous reversal spins sublattices. They signal change between antiferromagnetic orderings, basically competition Hamiltonian. plot dependence temperature at which new occurs, for parameters Our results differ radically from earlier obtained other authors based mean theories. temperatures particular combinations parameters. Mean theory predicts wide range where system presents even several temperatures; most these regions found none. In contrast analysis only looks magnetizations, our study includes behavior sublattice