We have measured the in-plane angular variation of nucleation and annihilation fields of a multi-domain magnetic single dot with a microsquid. The dots are Fe/Mo(110) self-assembled in UHV, with sub-micron size and a hexagonal shape. The angular variations were quantitatively reproduced by micromagnetic simulations. Discontinuities in the variations are observed, and shown to result from bifurcations related to the interplay of the non-uniform magnetization state with the shape of the dot.
@article{arxiv.cond-mat/0405651,
title = {Angular-dependence of magnetization switching for a multi-domain dot: experiment and simulation},
author = {O. Fruchart and J. C. Toussaint and P. O. Jubert and W. Wernsdorfer and R. Hertel and D. Mailly and J. Kirschner},
journal= {arXiv preprint arXiv:cond-mat/0405651},
year = {2009}
}
Comments
4 pages, 4 figures, for submission as a regular article