Metamagnets in uniform and random fields
نویسندگان
چکیده
We study a two-sublattice Ising metamagnet with nearest and next-nearestneighbor 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. 75.10.Nr, 05.50.+q, 64.60.Cn Typeset using REVTEX 1
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تاریخ انتشار 2008