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dc.contributor.authorCastro, Gustavo Montgomery Bonfimpt_BR
dc.contributor.authorGeshev, Julian Penkovpt_BR
dc.contributor.authorSchmidt, Joao Edgarpt_BR
dc.contributor.authorBaggio-Saitovitch, E.pt_BR
dc.contributor.authorNagamine, Luiz Carlos Camargo Mirandapt_BR
dc.date.accessioned2014-06-06T02:06:38Zpt_BR
dc.date.issued2009pt_BR
dc.identifier.issn0021-8979pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/96130pt_BR
dc.description.abstractThe effects of a Cu interlayer on the perpendicular exchange bias in IrMn/Cu/[Co/ Pt]3 multilayers were investigated by focusing on the correlation between the exchange bias and the magnetic anisotropy. The in-plane magnetization hysteresis loops were interpreted in the framework of a phenomenological model based on the coherent magnetization rotation, indicating that the easy magnetization axis makes an angle of approximately 15° with the normal of the IrMn/[Co/ Pt]3 film. This angle decreases with the introduction of the Cu spacer thickness in the IrMn/Cu/[Co/ Pt]3 system, indicating that the Cu interlayer leads to a predominant perpendicular anisotropy. Although a maximum of the out-of-plane anisotropy is found for Cu layer thickness between 4 and 5 Å, the maximum of the perpendicular exchange bias was found at 3 Å of Cu, which could be attributed to the interplay between two effects, mainly the increase in the effective perpendicular anisotropy with the Cu spacer thickness due to the reorientation of the Co moment toward the normal to the film’s plane direction, and the exponential decrease in the ferromagnet/antiferromagnet exchange coupling and, consequently, of the exchange bias shift field with the Cu interlayer thickness.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofJournal of applied physics. Melville. Vol. 106, no. 11 (Dec. 2009), 113922, 4 p.pt_BR
dc.rightsOpen Accessen
dc.subjectFísica da matéria condensadapt_BR
dc.subjectAnisotropia magnética perpendicularpt_BR
dc.subjectHisterese magnéticapt_BR
dc.subjectMomentos magnéticospt_BR
dc.subjectMulticamadas magnéticaspt_BR
dc.subjectPolarização por intercâmbiopt_BR
dc.subjectCobaltopt_BR
dc.subjectPlatinapt_BR
dc.titleCone magnetization state and exchange bias in IrMn/Cu/[Co/Pt]3 multilayerspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000731484pt_BR
dc.type.originEstrangeiropt_BR


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