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Long-time calculation of the thermal magnetization reversal using Metropolis Monte Carlo

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Chubykalo-Fesenko, Oksana and Kauffman, J. and Lengsfield, B. and Smirnov Rueda, Román (2002) Long-time calculation of the thermal magnetization reversal using Metropolis Monte Carlo. Journal of Magnetism and Magnetic Materials, 242-24 (Parte). pp. 1052-1056. ISSN 0304-8853

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Official URL: http://www.sciencedirect.com/science/article/pii/S0304885301013555


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Abstract

The standard Metropolis Monte Carlo is used to simulate thermal magnetization decay in ensemble of interacting and non-interacting particles. The fitting of demagnetization curves to simple Neel Arrhenius model, using the volume distribution, suggests that in I non-interacting case one Monte Carlo step is proportional to a square root of time. The same dependence arises from the consideration of magnetic particle moving in the external potential according to Brownian dynamics. This constitutes the basis of the so-called Monte Carlo With quantified time step The analytical calculations show that the method works reasonably in the case of small-to-intermediate size barriers and for a high anisotropy system. The application of the method to magnetic recording media reveals qualitatively the same dependence on the exchange parameter as Obtained by kinetic Monte Carlo.


Item Type:Article
Uncontrolled Keywords:Micromagnetic calculations; Thermal stability
Subjects:Sciences > Physics > Mathematical physics
ID Code:20224
Deposited On:04 Mar 2013 15:39
Last Modified:12 Dec 2018 15:07

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