Magnetization switching in nanowires: Monte Carlo study with fast Fourier transformation for dipolar "elds
نویسندگان
چکیده
For the investigations of thermally activated magnetization reversal in systems of classical magnetic moments numerical methods are desirable. We present numerical studies which base on time quanti"ed Monte Carlo methods where the long-range dipole}dipole interaction is calculated with the aid of fast Fourier transformation. As an example, we study models for ferromagnetic nanowires comparing our numerical results for the characteristic time of the reversal process also with numerical data from Langevin dynamics simulations where the fast Fourier transformation method is well established. Depending on the system geometry di!erent reversal mechanism occur like coherent rotation, nucleation, and curling. ( 2000 Elsevier Science B.V. All rights reserved. PACS: 75.10.Hk; 75.40.Mg; 75.40.Gb
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Magnetization switching in nanowires: Monte Carlo study with
For the investigations of thermally activated magnetization reversal in systems of classical magnetic moments numerical methods are desirable. We present numerical studies which base on time quanti"ed Monte Carlo methods where the long-range dipole}dipole interaction is calculated with the aid of fast Fourier transformation. As an example, we study models for ferromagnetic nanowires comparing o...
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