Critical behavior of an Ising metamagnet in uniform and random fields

We use an effective field method to analyze the thermodynamic behavior of an Ising metamagnet in uniform and random magnetic fields. Depending on the strength of the random fields, we show that the phase diagram displays a tricritical point and reentrant second-order transition lines. This reentrance is due to the competition between uniform and random interactions.

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Year of publication:	2007
Authors:	de Oliveira, D.C. ; da Silva, A.A.P. ; Albuquerque, Douglas F. de ; Arruda, Alberto S. de
Published in:	Physica A: Statistical Mechanics and its Applications. - Elsevier, ISSN 0378-4371. - Vol. 386.2007, 1, p. 205-211
Publisher:	Elsevier

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Type of publication:	Article
Source:	RePEc - Research Papers in Economics

Persistent link: https://www.econbiz.de/10010591033