Phase transitions of Ising mixed spin 1 and 3/2 with random crystal field distribution

S. Sabri, M. EL Falaki, M. EL Yadari, A. Benyoussef and A. EL Kenz

Physica A: Statistical Mechanics and its Applications, 2016, vol. 460, issue C, 210-221

Abstract: The thermal and magnetic properties of the mixed spin-1 and spin-3/2 in the presence of the random crystal field are studied within the mean field approach based on the Bogoliubov inequality for the Gibbs free energy. The model exhibits first, second order transitions, a tricritical point, triple point and an isolated critical end point. It is found that the system displays simple and double compensation temperatures, five topologies of the phase diagrams. A re-entrant phenomenon is also discussed and the thermal dependences of total magnetization according to extended Neel classification have been also given.

Keywords: Phase transitions; Magnetism; Critical behavior; Mean field theory; Compensation temperature (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:460:y:2016:i:c:p:210-221

DOI: 10.1016/j.physa.2016.04.012

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