Numerical simulations of two dimensional magnetic domain patterns
Statistical Mechanics
2009-11-10 v2 Materials Science
Abstract
I show that a model for the interaction of magnetic domains that includes a short range ferromagnetic and a long range dipolar anti-ferromagnetic interaction reproduces very well many characteristic features of two-dimensional magnetic domain patterns. In particular bubble and stripe phases are obtained, along with polygonal and labyrinthine morphologies. In addition, two puzzling phenomena, namely the so called `memory effect' and the `topological melting' observed experimentally are also qualitatively described. Very similar phenomenology is found in the case in which the model is changed to be represented by the Swift-Hohenberg equation driven by an external orienting field.
Cite
@article{arxiv.cond-mat/0402406,
title = {Numerical simulations of two dimensional magnetic domain patterns},
author = {E. A. Jagla},
journal= {arXiv preprint arXiv:cond-mat/0402406},
year = {2009}
}
Comments
8 pages, 8 figures. Version to appear in Phys. Rev. E