A generalization of the spherical model: Reentrant phase transition in the spin one ferromagnet

Details A generalization of the spherical model: Reentrant phase transition in the spin one ferromagnet A generalization of the spherical model: Reentrant phase transition in the spin one ferromagnet

1999-07-06

arxiv.org/abs/cond-mat/9907073v1

Physics

Condensed Matter

Statistical Mechanics

Four Latex Pages with one encapsulated postscript figure

Scientific paper

By mapping the hamiltonian of the spin one ferromagnet onto that of the classical spherical model we investigate the possible phase transitions and the phase diagram of the spin one ferromagnet. Similarly to what happens in the spherical model we find no phase transition in one and two dimensions. Nonetheless, for three dimensions we obtain a phase diagram in which the most important and unexpected feature is the existence of a ferromagnetic-paramagnetic transition at low temperatures.

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