Ferromagnetic Liquid Thin Films Under Applied Field
Abstract
Theoretical calculations, computer simulations and experiments indicate the possible existence of a ferromagnetic liquid state, although definitive experimental evidence is lacking. Should such a state exist, demagnetization effects would force a nontrivial magnetization texture. Since liquid droplets are deformable, the droplet shape is coupled with the magnetization texture. In a thin-film geometry in zero applied field, the droplet has a circular shape and a rotating magnetization texture with a point vortex at the center. We calculate the elongation and magnetization texture of such ferromagnetic thin film liquid droplet confined between two parallel plates under a weak applied magnetic field. The vortex stretches into a domain wall and exchange forces break the reflection symmetry. This behavior contrasts qualitatively and quantitatively with the elongation of paramagnetic thin films.
Cite
@article{arxiv.cond-mat/9911202,
title = {Ferromagnetic Liquid Thin Films Under Applied Field},
author = {S. Banerjee and M. Widom},
journal= {arXiv preprint arXiv:cond-mat/9911202},
year = {2009}
}
Comments
10 pages, 4 figures, Submitted to Phys. Rev. E