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Title: Analytical modeling of the axial coercive field in soft ferromagnetic nanocylinders
Authors: Clime, L.
Yelon, A.
Wu, Y. 
Veres, T.
Keywords: Analytical micromagnetics
Coercive field
Exchange constant
Ferromagnetic nanodots
Magnetic vortex
Issue Date: Jan-2008
Citation: Clime, L., Yelon, A., Wu, Y., Veres, T. (2008-01). Analytical modeling of the axial coercive field in soft ferromagnetic nanocylinders. Journal of Computational and Theoretical Nanoscience 5 (1) : 109-116. ScholarBank@NUS Repository.
Abstract: Axial magnetization processes in soft ferromagnetic nanodots are investigated in this paper. Under the simplifying assumption of axisymmetric vortex-like magnetic structures we find the equilibrium magnetic configuration by unidimensional numerical minimization of the magnetic Gibbs free energy. We propose a simple analytical model for the axial magnetization processes in amorphous ferromagnetic nanodots. Axial coercive field values from this analytical model are compared with those from full numerical micromagnetic simulations and good agreement is obtained. An experimental method for evaluating the exchange interactions in soft magnetic materials by using the axial magnetic loops of nanodots with different aspect ratios is proposed. Copyright © 2008 American Scientific Publishers All rights reserved.
Source Title: Journal of Computational and Theoretical Nanoscience
ISSN: 15461955
DOI: 10.1166/jctn.2008.014
Appears in Collections:Staff Publications

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