A simple Lattice Model for hysteresis loops with exchange bias

Eduard Vives; Xavier Illa; Antoni Planes

doi:10.1016/j.jmmm.2003.12.1089

A simple Lattice Model for hysteresis loops with exchange bias

Materials Science 2009-11-11 v1

Authors: Eduard Vives , Xavier Illa , Antoni Planes

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Abstract

A simple lattice model that allows hysteresis loops with exchange bias to be reproduced is presented. The model is based on the metastable Random Field Ising model, driven by an external field, with synchronous local relaxation dynamics. The key ingredient of the model is that a certain fraction $f$ of the exchange constants between neighbouring spins is enhanced to a very large value $J_E$ . The model allows the dependence of several properties of the hysteresis loops to be analyzed as a function of different parameters and we have carried out an analysis of the first-order reversal curves.

Keywords

exchange bias hysteresis loops random field Ising model lattice model first-order reversal curves metastability

Cite

@article{arxiv.cond-mat/0605337,
  title  = {A simple Lattice Model for hysteresis loops with exchange bias},
  author = {Eduard Vives and Xavier Illa and Antoni Planes},
  journal= {arXiv preprint arXiv:cond-mat/0605337},
  year   = {2009}
}

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2 pages, 3 figures

A simple Lattice Model for hysteresis loops with exchange bias

Abstract

Keywords

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