Phase diagram of a three-dimensional antiferromagnet with random magnetic anisotropy
Materials Science
2013-12-17 v2 Statistical Mechanics
Abstract
Three-dimensional (3D) antiferromagnets with random magnetic anisotropy (RMA) experimentally studied to date do not have random single-ion anisotropies, but rather have competing two-dimensional and three-dimensional exchange interactions which can obscure the authentic effects of RMA. The magnetic phase diagram FeNiF epitaxial thin films with true random single-ion anisotropy was deduced from magnetometry and neutron scattering measurements and analyzed using mean field theory. Regions with uniaxial, oblique and easy plane anisotropies were identified. A RMA-induced glass region was discovered where a Griffiths-like breakdown of long-range spin order occurs.
Keywords
Cite
@article{arxiv.1312.3687,
title = {Phase diagram of a three-dimensional antiferromagnet with random magnetic anisotropy},
author = {Felio A. Perez and Pavel Borisov and Trent A. Johnson and Tudor D. Stanescu and David Lederman and M. R. Fitzsimmons and Adam A. Aczel and Tao Hong},
journal= {arXiv preprint arXiv:1312.3687},
year = {2013}
}
Comments
12 pages, 4 figures