Critical behavior of an Ising metamagnet in uniform and random fields

D.C. de Oliveira, A.A.P. da Silva, Douglas F. de Albuquerque and Alberto S. de Arruda

Physica A: Statistical Mechanics and its Applications, 2007, vol. 386, issue 1, 205-211

Abstract: 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.

Date: 2007
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:386:y:2007:i:1:p:205-211

DOI: 10.1016/j.physa.2007.07.073

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