Journal
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
Volume 388, Issue 22, Pages 4713-4718Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physa.2009.08.014
Keywords
Mixed-spin Ising model; Ferrimagnet; Single-ion anisotropy; Compensation points
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The magnetic behaviors of a mixed spin-2 and spin-5/2 Ising ferrimagnetic system on a square lattice are studied with the mean-field approximation (MFA) based on the Bogoliubov inequality for the free energy. A Landau expansion of the free energy in the order parameter is also described in this work. In particular, we investigate the effect of a single-ion anisotropy on the compensation phenomenon. (C) 2009 Elsevier B.V. All rights reserved.
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