Magnetic hysteresis of interface-biased flat iron dots

Rebouças, G. O. G.; Silva, A. S. W. T.; Dantas, Ana L.; Camley, R. E.; Carriço, Artur da Silva

Magnetic hysteresis of interface-biased flat iron dots

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dc.contributor.author	Rebouças, G. O. G.
dc.contributor.author	Silva, A. S. W. T.
dc.contributor.author	Dantas, Ana L.
dc.contributor.author	Camley, R. E.
dc.contributor.author	Carriço, Artur da Silva
dc.date.accessioned	2020-04-20T12:08:54Z
dc.date.available	2020-04-20T12:08:54Z
dc.date.issued	2009-03-04
dc.description.resumo	We report a theoretical study of the coercivity and bias of iron dots exchange coupled with an antiferromagnetic substrate. We show that flat dots, with height close to the iron exchange length, and lateral dimensions of a few exchange lengths, exhibit large enhancement of coercivity and exchange bias. For small interface field strength the magnetization reversal is nearly a coherent rotation with symmetrical loops. Interface pinning leads to large reduction in coercivity and asymmetrical loops, if the interface field strength is comparable to the value of the iron exchange field. We discuss the impact of geometrical confinement and interface pinning on the magnetization reversal mechanisms. We show that small area dots with height larger than the exchange length display stronger interface effects.	pt_BR
dc.identifier.citation	REBOUÇAS, G. O. G.; SILVA, A. S. W. T.; DANTAS, Ana L.; CAMLEY, R. E.; CARRIÇO, A. S. Magnetic hysteresis of interface-biased flat iron dots. Physical Review. B, Condensed Matter and Materials Physics, v. 79, p. 104402, 2009. ISSN 1098-0121. DOI https://doi.org/10.1103/PhysRevB.79.104402. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.79.104402 . Acesso em: 20 abr. 2020.	pt_BR
dc.identifier.doi	https://doi.org/10.1103/PhysRevB.79.104402
dc.identifier.issn	1098-0121 (print), 1550-235X (online)
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/28817
dc.language	en	pt_BR
dc.publisher	Physical review B	pt_BR
dc.subject	Magnetic hysteresis	pt_BR
dc.subject	Interface-biased flat iron dots	pt_BR
dc.title	Magnetic hysteresis of interface-biased flat iron dots	pt_BR
dc.type	article	pt_BR