Phase diagram of a mixed spin-1 and spin-3/2 Ising ferrimagnet
Abstract
Critical and compensation properties of a mixed spin-1 and spin-3/2 Ising ferrimagnet on a square lattice are investigated by standard and histogram Monte Carlo simulations. The critical temperature is studied as a function of a single-ion anisotropy strength. The second order of the phase transition is established by finite-size scaling for the entire boundary. Some previously obtained results, such as a tricritical point, predicted by the mean field theory (MFT) and effective field theory (EFT), or a first-order transition line separating two different ordered phases, obtained by the cluster variational theory (CVT), are deemed artifacts of the respective approximations. So is a reentrant phenomenon produced by CVT. Nevertheless, the multicompensation behavior predicted by MFT and EFT was confirmed.
Keywords
Cite
@article{arxiv.1212.5471,
title = {Phase diagram of a mixed spin-1 and spin-3/2 Ising ferrimagnet},
author = {M. Žukovič and A. Bobák},
journal= {arXiv preprint arXiv:1212.5471},
year = {2012}
}
Comments
14 pages, 5 figures