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Magnetic domain wall pinning by a curved conduit

Lewis, E. R., Petit, D., Thevenard, L., Jausovec, A. V., O'Brien, L., Read, Daniel and Cowburn, R. P. 2009. Magnetic domain wall pinning by a curved conduit. Applied Physics Letters 95 (15) , 152505. 10.1063/1.3246154

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The pinning of a magnetic domain wall in a curved Permalloy (NiFe) nanostrip is experimentally studied. We examine the dependence of the pinning on both the radius of curvature of the bend and the chirality of the transverse domain wall. We find that bends act as potential wells or potential barriers depending on the chirality of the domain wall; the pinning field in both cases increases with decreasing radius of curvature. Micromagnetic simulations are consistent with the experimental results and show that both exchange and demagnetizing energies play an important role.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Additional Information: 3 pp.
Publisher: American Institute of Physics
ISSN: 0003-6951
Last Modified: 04 Jun 2017 03:05

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