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, cilt.364, ss.263-270, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 364
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.physa.2005.08.077
  • Dergi Adı: PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
  • Sayfa Sayıları: ss.263-270

Özet

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.