Monte Carlo Simulation of Magnetization Reversal in Fe Sesquilayers on W(110)
Abstract
Iron sesquilayers grown at room temperature on W(110) exhibit a pronounced coercivity maximum near a coverage of 1.5 atomic monolayers. On lattices which faithfully reproduce the morphology of the real films, a kinetic Ising model is utilized to simulate the domain-wall motion. Simulations reveal that the dynamics is dominated by the second-layer islands, which act as pinning centers. The simulated dependencies of the coercivity on the film coverage, as well as on the temperature and the frequency of the applied field, are very similar to those measured in experiments. Unlike previous micromagnetic models, the presented approach provides insight into the dynamics of the domain-wall motion and clearly reveals the role of thermal fluctuations.
Keywords
Cite
@article{arxiv.cond-mat/9706036,
title = {Monte Carlo Simulation of Magnetization Reversal in Fe Sesquilayers on W(110)},
author = {M. Kolesik and M. A. Novotny and P. A. Rikvold},
journal= {arXiv preprint arXiv:cond-mat/9706036},
year = {2009}
}
Comments
Final version to appear in Phys. Rev. B. References to related works added. 7 pages, 5 figures, RevTex, mpeg simulations available at http://www.scri.fsu.edu/~rikvold