Domain wall interactions at a cross-shaped vertex.
Philos Trans A Math Phys Eng Sci
; 370(1981): 5794-805, 2012 Dec 28.
Article
em En
| MEDLINE
| ID: mdl-23166381
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.
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MEDLINE
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En
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2012
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Article