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dc.contributor.authorSantos, Mauricio Cougo dospt_BR
dc.contributor.authorGeshev, Julian Penkovpt_BR
dc.contributor.authorSilva, Daniela Kempf dapt_BR
dc.contributor.authorSchmidt, Joao Edgarpt_BR
dc.contributor.authorPereira, Luis Gustavopt_BR
dc.contributor.authorHubler, Robertopt_BR
dc.contributor.authorAllongue, Philippept_BR
dc.date.accessioned2014-05-31T02:06:46Zpt_BR
dc.date.issued2003pt_BR
dc.identifier.issn0021-8979pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/95831pt_BR
dc.description.abstractWe report on the influence of the Si (111) surface preparation on both the structural and the magnetic properties of iron thin films grown onto them. Two different substrate preparation procedures were used, in one of which the substrate was purposely oxidized. The surface analysis was performed by using atomic force and scanning tunneling microscopies, and the magnetic behavior of the films was observed by magneto-optic Kerr effect polarimetry. A strong relationship between the substrate preparation procedure, morphology, and the magnetic response of the iron films was found. A phenomenological model was used to interpret the experimental magnetization data and to derive the anisotropy parameters for both types of Fe samples. It was found that the magnetic response of the film grown onto the oxidized substrate is dominated by the uniaxial anisotropy originated from the substrate topology (a terracelike structure); the behavior of the other film, grown onto the unoxidized substrate, is determined by both cubic and easy-plane anisotropies.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofJournal of applied physics. Melville. Vol. 94, no. 3 (Aug. 2003), p. 1490-1494pt_BR
dc.rightsOpen Accessen
dc.subjectMicroscopia de força atômicapt_BR
dc.subjectMateriais ferromagnéticospt_BR
dc.subjectFerropt_BR
dc.subjectEfeito magneto-otico kerrpt_BR
dc.subjectAnisotropia magnéticapt_BR
dc.subjectFilmes finos magneticospt_BR
dc.subjectMagnetizaçãopt_BR
dc.subjectMicroscopia de tunelamentopt_BR
dc.subjectSilíciopt_BR
dc.titleStrong dependence of the Fe thin-film magnetic anisotropy on the Si(111) substrate preparationpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000374100pt_BR
dc.type.originEstrangeiropt_BR


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