Random crystal-field effects in a mixed spin-1 and spin-3/2 ferrimagnetic Ising system

I.J. Souza, P.H.Z. de Arruda, M. Godoy, L. Craco and A.S. de Arruda

Physica A: Statistical Mechanics and its Applications, 2016, vol. 444, issue C, 589-600

Abstract: We study the mixed spin-1 and spin-3/2 ferrimagnetic Ising system under the effect of different random crystal-fields within the mean-field theory based on the Bogoliubov inequality for the Gibbs free energy. The phase diagrams are obtained in the plane of critical temperature versus random crystal-field, showing a tricritical behavior with second-order transition lines separating the first-order transition lines by tricritical points.

Keywords: Mixed-spin Ising model; Random-crystal field; Tricritical point (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:444:y:2016:i:c:p:589-600

DOI: 10.1016/j.physa.2015.10.089

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