Sandwiched trilayer of Bethe lattices in the form of spin-(1/2,1,1/2)


ALBAYRAK E. , Aker A.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol.322, no.21, pp.3281-3289, 2010 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 322 Issue: 21
  • Publication Date: 2010
  • Doi Number: 10.1016/j.jmmm.2010.06.009
  • Title of Journal : JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
  • Page Numbers: pp.3281-3289

Abstract

The sandwiched trilayer of Bethe lattices in the form of the spins with spin-(1/2,1,1/2) Ising model is studied in terms of the recursion relations with either ferromagnetic or antiferromagnetic type bilinear interactions between the nearest-neighbor (NN) spins. The ground-state (GS) phase diagrams are obtained and it was found that the model presents six different GS phase configurations. In order to obtain the phase diagrams, the thermal variations of the order-parameter, spinspin correlation functions and free energy are analyzed and different topological phase diagrams are obtained. It was found that the system exhibits different critical behaviors such as, second- and first-order phase transitions, tricritical and bicritical points for the values of the coordination numbers q=3,4 and 6. (C) 2010 Elsevier B.V. All rights reserved.