The phase diagrams of the +/- K model on the Bethe lattice


Albayrak E.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol.386, pp.20-24, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 386
  • Publication Date: 2015
  • Doi Number: 10.1016/j.jmmm.2015.03.056
  • Journal Name: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.20-24
  • Keywords: Blume-Emery-Griffiths, Spin-1, Bethe lattice, Biquadratic exchange interaction, EMERY-GRIFFITHS MODEL, ONE ISING-MODEL, SIMPLE CUBIC LATTICE, CRYSTAL-FIELD, RENORMALIZATION-GROUP, MONTE-CARLO, MEAN-FIELD, BEG MODEL, BOND, BEHAVIOR
  • Erciyes University Affiliated: Yes

Abstract

The biquadratic exchange interaction is randomized in a bimodal form with probabilities (p) and (1 - p) for the cases with K > 0 (attractive case) and K < 0 (repulsive case), respectively, and its effects on the phase diagrams of the spin-1 Blume-Emery-Griffiths model are studied on the Bethe lattice by using the recursion relations. It was found that the critical behaviors of the model change drastically. (C) 2015 Elsevier B.V. All rights reserved.