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Micromagnetic simulations of fast switching in single domain ferromagnetic particles

F. CIUBOTARU1, A. STANCU1,* , M. CERCHEZ1,2

Affiliation

  1. Department of Solid State and Theoretical Physics, “Alexandru Ioan Cuza University”, 700506 Iasi, Romania
  2. Heinrich-Heine-Universität, Universitätsstr.1, 40225 Düsseldorf, Germany

Abstract

In this paper we present the results of numerical simulations concerning the thermal effects in the dynamics and the switching probability of one spin magnetic particle with a thin-film like geometry and in-plane anisotropy. The dynamics of magnetization vector is calculated using the LLG equation and Langevin formalism. We have determined the maximum angle of dispersion due to thermal fluctuation as a function of temperature and we calculate the time window when switching has probability 1 and study this as a function of the applied field..

Keywords

Stochastic Landau–Lifshitz–Gilbert equation, Magnetization switching, Single domain particle.

Submitted at: Sept. 8, 2006
Accepted at: Sept. 13, 2006

Citation

F. CIUBOTARU, A. STANCU, M. CERCHEZ, Micromagnetic simulations of fast switching in single domain ferromagnetic particles, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 5, pp. 1744-1746 (2006)