Numerical Study of a Mixed Ising Ferrimagnetic System
Abstract
We present a study of a classical ferrimagnetic model on a square lattice in which the two interpenetrating square sublattices have spins one-half and one. This model is relevant for understanding bimetallic molecular ferrimagnets that are currently being synthesized by several experimental groups. We perform exact ground-state calculations for the model and employ Monte Carlo and numerical transfer-matrix techniques to obtain the finite-temperature phase diagram for both the transition and compensation temperatures. When only nearest-neighbor interactions are included, our nonperturbative results indicate no compensation point or tricritical point at finite temperature, which contradicts earlier results obtained with mean-field analysis.
Keywords
Cite
@article{arxiv.cond-mat/9509076,
title = {Numerical Study of a Mixed Ising Ferrimagnetic System},
author = {G. M. Buendia and M. A. Novotny},
journal= {arXiv preprint arXiv:cond-mat/9509076},
year = {2009}
}
Comments
Figures can be obtained by request to novotny@scri.fsu.edu or buendia@usb.ve