Depinning field of a periodic domain wall array in vicinal nanowires

Dantas, Ana L.; Rebouças, G. O. G.; Carriço, Artur da Silva

Depinning field of a periodic domain wall array in vicinal nanowires

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dc.contributor.author	Dantas, Ana L.
dc.contributor.author	Rebouças, G. O. G.
dc.contributor.author	Carriço, Artur da Silva
dc.date.accessioned	2020-04-20T12:27:22Z
dc.date.available	2020-04-20T12:27:22Z
dc.date.issued	2009
dc.description.resumo	We report a theoretical investigation of the magnetic states and depinning field of a periodic array of head-to-head domain walls of flat Fe rectangular nanowires, exchange coupled with a vicinal two-sublattice uniaxial antiferromagnetic substrate. We show that for strong interface exchange energy, domain walls are pinned at interface steps perpendicular to the antiferromagnetic easy axis, separating terraces with opposite interface exchange field. The array sequence, which alternates head-to-head and tail-to-tail domain walls, may form a structure with alternate chirality or with the same chirality. The domain wall dipolar field affects the chirality sequence, which is tunable by the geometrical constraints and the strength of the interface exchange field. The depinning field of 10 nm thick, 1 μm long wires, with widths of 100 and 200 nm, is of the order of the interface field strength, and the depinning process involves domain wall motion and the transversal displacement of a periodic array of vortices.	pt_BR
dc.identifier.citation	DANTAS, Ana L.; REBOUÇAS, G. O. G.; CARRIÇO, A. S. Depinning field of a periodic domain wall array in vicinal nanowires. Journal of Applied Physics, v. 105, p. 07C116, 2009. ISSN 0021-8979. DOI https://doi.org/10.1063/1.3067476 . Disponível em: http://aip.scitation.org/doi/10.1063/1.3067476 . Acesso em: 20 abr. 2020	pt_BR
dc.identifier.doi	https://doi.org/10.1063/1.3067476
dc.identifier.issn	0021-8979 (print), 1089-7550 (online)
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/28818
dc.language	en	pt_BR
dc.publisher	Journal of Applied Physics	pt_BR
dc.subject	Depinning field	pt_BR
dc.subject	Periodic domain	pt_BR
dc.subject	Wall array	pt_BR
dc.subject	Vicinal nanowires	pt_BR
dc.title	Depinning field of a periodic domain wall array in vicinal nanowires	pt_BR
dc.type	article	pt_BR