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Complex pulsed field magnetization behavior and Walker breakdown in a NiFe thin-film.

Burn, D.M. and Atkinson, D. (2010) 'Complex pulsed field magnetization behavior and Walker breakdown in a NiFe thin-film.', Journal of applied physics., 108 (7). 073926.

Abstract

The magnetization behavior of a Permalloy thin-film (nominally Ni81Fe19) was investigated as a function of combined quasistatic and pulsed magnetic fields measured using magneto-optic Kerr effect magnetometry. We observed complex field dependent switching behavior that depends on the relative contributions to the total field of the quasistatic and pulsed fields. As the pulsed field amplitude was increased, complex switching behavior occurs for total fields in excess of the coercive field. A simple phenomenological domain wall propagation model suggests a qualitative understanding of this complex behavior based on Walker breakdown of the domain wall motion occurring in the Permalloy thin-film.

Item Type:Article
Keywords:Coercive force, Ferromagnetic materials, Kerr magneto-optical effect, Magnetic domain walls, Magnetic switching, Magnetic thin films, Metallic thin films, Permalloy.
Full text:PDF - Published Version (173Kb)
Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1063/1.3490233
Publisher statement:Copyright 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Burn, D.M. and Atkinson, D. (2010) 'Complex pulsed field magnetization behavior and Walker breakdown in a NiFe thin-film.', Journal of applied physics., 108 (7). 073926 and may be found at http://dx.doi.org/10.1063/1.3490233
Record Created:27 Sep 2012 14:20
Last Modified:09 Oct 2012 15:06

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