Multicritical behavior of the antiferromagnetic spin‐32 Blume–Emery–Griffiths model

Mustafa Keskin, M. Ali Pınar, Ahmet Erdinç and Osman Canko

Physica A: Statistical Mechanics and its Applications, 2006, vol. 364, issue C, 263-270

Abstract: The multicritical behavior of the antiferromagnetic spin-32 Blume–Emery–Griffiths model in an external magnetic field is studied within the lowest approximation of the cluster variation method. We have investigated the thermal variations of order parameters for different values of interaction parameters and external magnetic field and constructed the resulting phase diagrams. The model exhibits distinct critical regions, including the first-order, second-order tricritical point, double critical point and zero critical point. Comparison of the phase diagrams with closely related systems is made.

Keywords: Spin-32 Blume–Emery–Griffiths model; Cluster variation method; Phase diagrams (search for similar items in EconPapers)
Date: 2006
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:364:y:2006:i:c:p:263-270

DOI: 10.1016/j.physa.2005.08.077

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