STABLE, METASTABLE AND UNSTABLE SOLUTIONS OF A SPIN-1 ISING SYSTEM IN THE PRESENCE OF AN EXTERNAL MAGNETIC-FIELD
PHYSICA SCRIPTA, vol.47, no.3, pp.328-332, 1993 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 47 Issue: 3
- Publication Date: 1993
- Doi Number: 10.1088/0031-8949/47/3/003
- Journal Name: PHYSICA SCRIPTA
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.328-332
- Erciyes University Affiliated: Yes
Abstract
A spin-1 Ising model with bilinear (J) and biquadratic (K) exchange interactions in the presence of an external magnetic field is studied using the lowest approximation of the cluster variation method. Beside the stable solutions, metastable and unstable solutions of the system are also found. All these solutions are shown in the two dimensional phase space. The influence of an external magnetic field and the ratio of the coupling parameter alpha = J/K on metastable and unstable solutions are investigated.