Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2006-11-18
J. of Mag. and Mag. Mat. 316 (2007) 49
Physics
Condensed Matter
Statistical Mechanics
12 pages, 5 figures. New references, changes in the title and minor corrections
Scientific paper
10.1016/j.jmmm.2007.03.195
Using a time quantified Monte Carlo scheme we performed simulations of the switching time distribution of single mono-domain particles in the Stoner-Wohlfarth approximation. We considered uniaxial anisotropy and different conditions for the external applied field. The results obtained show the switching time distribution can be well described by two relaxation times, either when the applied field is parallel to the easy axis or for an oblique external field and a larger damping constant. We found that in the low barrier limit these relaxation times are in very good agreement with analytical results obtained from solutions of the Fokker-Planck equation related to this problem. When the damping is small and the applied field is oblique the shape of the distribution curves shows several peaks and resonance effects.
Billoni Orlando V.
Stariolo Daniel A.
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