Volume 241, Issue 6 pp. 1324-1332
Original Paper

The spin-3/2 Blume–Emery–Griffiths model with repulsive biquadratic coupling in an external field

C. Ekiz

Corresponding Author

C. Ekiz

Department of Physics, Gaziosmanpaşa University, 60110 Tokat, Turkey

Phone: +90(356) 252 1582/3067, Fax: +90(356) 252 1585Search for more papers by this author
First published: 30 March 2004
Citations: 13

Abstract

The spin-3/2 Blume–Emery–Griffiths model is solved on the Bethe lattice in the absence and presence of the external field using the iteration technique (recursion method). The phase diagrams are obtained for the coordination number q = 3, 4, 6 and 8. We confirm the existence of a staggered quadrupolar phase in addition to a ferrimagnetic and ferromagnetic ordered phases and analyze the occurence of re-entrant boundaries inside the ordered region as a character of the coordination of the lattice. A comparison is made with the results of other approximate methods. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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