Publication detailsD.M. Burn & D. Atkinson (2010). Complex pulsed field magnetization behavior and Walker breakdown in a NiFe thin-film. Journal of Applied Physics 108(7): 073926.
- Publication type: Journal Article
- ISSN/ISBN: 0021-8979, 1089-7550
- DOI: 10.1063/1.3490233
- Keywords: Coercive force, Ferromagnetic materials, Kerr magneto-optical effect, Magnetic domain walls, Magnetic switching, Magnetic thin films, Metallic thin films, Permalloy.
- Further publication details on publisher web site
- Durham Research Online (DRO) - may include full text
Author(s) from Durham
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.