Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10729214 | Physics Letters A | 2011 | 5 Pages |
Abstract
Two-dimensional magnetic plots of finite size were simulated by integrating the Landau-Lifshitz equation for the isotropic Heisenberg model with a systematic exploration of the effect of dipole-dipole interactions of various strengths d, at a low temperature. Structures with or without vortices are observed, and in the cases in which vortices are present, out-of-plane contributions show only for relatively weak dipolar strengths: the integrated intensity of the out-of-plane component decreases roughly as 1/d with increasing dipolar strength while the vortex core width decreases as dâ12. The coexistence of several vortices with an out-of-plane component seems limited to a narrow d-range, at least for the sample sizes studied. The size limit below which the vortices disappear decreases roughly as 1/d.
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Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
Ph. Depondt, J.-C.S. Lévy, F.G. Mertens,