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Simulation of Magnetization Switching in Nanoparticle Systems

D. Hinzke·U. Nowak
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Abstract

Magnetization reversal in magnetic nanostructures is investigated numerically over time-scales ranging from fast switching processes on a picosecond scale to thermally activated reversal on a microsecond time-scale. A simulation of the stochastic Landau-Lifshitz equation of motion is used as well as a time quantified Monte Carlo method for the simulation of classical spin systems modeling magnetic Co nanoparticles. For field pulses larger than the Stoner-Wohlfarth limit spin precession effects govern the reversal behavior of the particle while for lower fields a magnetization reversal is only possible when it is assisted by thermal fluctuations.

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D. Hinzke, U. Nowak. 2002-03-04. Simulation of Magnetization Switching in Nanoparticle Systems. https://doi.org/10.1002/1521-396x(200202)189%3A2%3C475%3A%3Aaid-pssa475%3E3.0.co%3B2-4

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