Tetracritical and novel tricritical points in a model magnet

John C. Wheeler and Pierre Pfeuty

Physica A: Statistical Mechanics and its Applications, 1997, vol. 244, issue 1, 476-483

Abstract: A generalized three-dimensional spherical model of magnetism is shown to exhibit a rich variety of phase equilibria and critical phenomena, including critical points not found in any classical Landau theory, but observed recently in a model of equilibrium polymerization. The model exhibits a tetracritical point at which four phases, two nonmagnetic and two magnetically ordered, become identical, as well as novel tricritical points at which the magnetic and wing critical lines meet at a cusp. The model also exhibits additional transitions, not found in the polymerization model.

Date: 1997
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:244:y:1997:i:1:p:476-483

DOI: 10.1016/S0378-4371(97)00235-5

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