Metamagnets in uniform and random fields
Disordered Systems and Neural Networks
2009-10-31 v1 Statistical Mechanics
Abstract
We study a two-sublattice Ising metamagnet with nearest and next-nearest-neighbor interactions, in both uniform and random fields. Using a mean-field approximation, we show that the qualitative features of the phase diagrams are significantly dependent on the distribution of the random fields. In particular, for a Gaussian distribution of random fields, the behavior of the model is qualitatively similar to a dilute Ising metamagnet in a uniform field.
Cite
@article{arxiv.cond-mat/9901187,
title = {Metamagnets in uniform and random fields},
author = {Serge Galam and Carlos S. O. Yokoi and Silvio R. Salinas},
journal= {arXiv preprint arXiv:cond-mat/9901187},
year = {2009}
}
Comments
14 pages, latex, 3 figures included