Domain wall interactions at a cross-shaped vertex

O'Brien, L. O., Beguivin, A., Petit, D., Fernandez-Pacheco, A., Read, Daniel ORCID: https://orcid.org/0000-0002-4178-4986 and Cowburn, R. P. 2012. Domain wall interactions at a cross-shaped vertex. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 370 (1981) , pp. 5794-5805. 10.1098/rsta.2012.0089

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Abstract

The interaction of two domain walls (DWs) at a cross-shaped vertex fabricated from two ferromagnetic nanowires has been experimentally investigated. Both magnetostatically repulsive and attractive interactions have been probed. It is found that in the repulsive case, a passing DW may directly induce the depinning of another that is already pinned at a vertex. This effect can be qualitatively described by considering only simple, magnetostatic-charge-based arguments. In the attractive case, however, asymmetric pinning is found, with complete suppression of depinning possible. This observed effect is contrary to simple charge-based arguments and highlights the need for full micromagnetic characterization of the DW interactions in more complex systems.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	The Royal Society
ISSN:	1364-503X
Last Modified:	24 Oct 2022 10:51
URI:	https://orca.cardiff.ac.uk/id/eprint/46147

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