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Influence of boundary geometry in domain wall propagation in magnetic films with asymmetric holes: Micromagnetic calculations

AuthorsAlija, Alejandro ; Sobrado, I.; Rodríguez-Rodríguez, G. ; Vélez, María ; Alameda, J. M. ; Martín, José Ignacio
Issue Date2010
PublisherInstitute of Physics Publishing
CitationJournal of Physics: Conference Series 200(4): 042001 (2010)
AbstractMicromagnetic simulations have been performed in uniaxial magnetic films with 2D array of asymmetric arrow shape holes. In order to understand the asymmetric pinning potential created by the holes, different boundary geometries conditions are used on the simulations. The depinning fields for forward and backward domain wall propagation have been calculated by the analysis of the energy landscapes as a function of the domain wall position. Domain wall depinning occurs preferentially at the free ends of the domain wall at the film boundaries. We have found that the domain wall propagation is different at the top/bottom boundaries of the simulated film which can be understood in terms of the magnetostatic energy and the chirality of the domain wall.
Description4 páginas, 2 figuras.
Publisher version (URL)http://dx.doi.org/10.1088/1742-6596/200/4/042001
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