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dc.contributor.authorMenéndez Dalmau, Enricpt_BR
dc.contributor.authorDias, Thiagopt_BR
dc.contributor.authorGeshev, Julian Penkovpt_BR
dc.contributor.authorLópez-Barberá Martín, José Franciscopt_BR
dc.contributor.authorNogués Sanmiquel, Joseppt_BR
dc.contributor.authorSteitz, Rolandpt_BR
dc.contributor.authorKirby, Brian J.pt_BR
dc.contributor.authorBorchers, Julie A.pt_BR
dc.contributor.authorPereira, Lino Miguel da Costapt_BR
dc.contributor.authorVantomme, A.pt_BR
dc.contributor.authorTemst, Kristiaanpt_BR
dc.date.accessioned2014-10-15T02:12:49Zpt_BR
dc.date.issued2014pt_BR
dc.identifier.issn1098-0121pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/104580pt_BR
dc.description.abstractThe interdependence between training and magnetization reversal in granular Co-CoO exchange bias (EB) systems prepared byOion implantation inCo thin films is demonstrated by polarized neutron reflectometry. While high-fluence O-implanted thin films show reduced relative training values and no asymmetry in magnetization reversal (all reversals take place by domain wall nucleation and motion), low-fluence O ion implantation results in an increased relative training and a magnetization reversal asymmetry between the first descending and the first ascending branches. Whereas the untrained decreasing field reversal occurs mainly by domain wall nucleation and motion, traces of a domain rotation contribution are evidenced in the increasing field reversal. This is explained by the evolution of the CoO structure and the contribution of the out-of-plane magnetization with ion implantation. The amount of incorporated O, which determines the threshold between both behaviors, is around 20 at.%. This reveals that the interdependence between training and magnetization reversal is insensitive to the morphology of the constituents (i.e., granular or layered), indicating that this is an intrinsic EB effect, which can be conveniently tailored by the interplay between the intrinsic properties of the investigated materials and ion implantation.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. B, Condensed matter and materials physics. Woodbury. Vol. 89, no. 14 (Apr. 2014), 144407, 9 p.pt_BR
dc.rightsOpen Accessen
dc.subjectMateriais granularespt_BR
dc.subjectImplantacao ionicapt_BR
dc.subjectFilmes finos magneticospt_BR
dc.subjectNucleaçãopt_BR
dc.subjectParedes de domínios magnéticospt_BR
dc.subjectReversão de magnetizaçãopt_BR
dc.subjectCompostos de cobaltopt_BR
dc.titleInterdependence between training and magnetization reversal in granular Co-CoO exchange bias systemspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000919024pt_BR
dc.type.originEstrangeiropt_BR


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