Dipolar random field Ising model: an application to garnet films
Abstract
The dipolar-random field Ising model (DRFIM) recently introduced displays a behaviour that can be connected to the magnetization of bidimensional magnetic media. Epitaxial magnetic garnet films seem to be the ideal test material for such a model. In this work the results of the measurements performed on garnet samples are presented, as well as the comparisons with simulation results obtained by the DRFIM. The results prove that a variety of hysteresis loops are well described by the DRFIM. This capability does not derive from the fine tuning of a great number of parameters, but by the interplay of exchange and dipolar interactions.
Keywords
Cite
@article{arxiv.cond-mat/9907075,
title = {Dipolar random field Ising model: an application to garnet films},
author = {Alessandro Magni and Gabor Vertesy},
journal= {arXiv preprint arXiv:cond-mat/9907075},
year = {2009}
}
Comments
HTML paper, GIF images. To appear on Phys.Rev.B (Brief Reports). Application of the model published on Phys.Rev.B 59 (1999) 985, cond-mat/9907074