Multicritical behavior of the antiferromagnetic spin-3/2 Blume-Emery-Griffiths model


Keskin M. , PINAR M. A. , Erdinc A., Canko O.

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, vol.364, pp.263-270, 2006 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 364
  • Publication Date: 2006
  • Doi Number: 10.1016/j.physa.2005.08.077
  • Title of Journal : PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
  • Page Numbers: pp.263-270

Abstract

The multicritical behavior of the antiferromagnetic spin-(3)/(2) Blume-Emery-Griffiths model in an external magnetic field is 2 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. (c) 2005 Elsevier B.V. All rights reserved.