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dc.contributor.authorSantos, Mauricio Cougo dospt_BR
dc.contributor.authorGeshev, Julian Penkovpt_BR
dc.contributor.authorPereira, Luis Gustavopt_BR
dc.contributor.authorSchmidt, Joao Edgarpt_BR
dc.date.accessioned2014-06-06T02:06:37Zpt_BR
dc.date.issued2009pt_BR
dc.identifier.issn0021-8979pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/96126pt_BR
dc.description.abstractThe present work reports on Fe thin films grown on vicinal Si(111) substrates via rf magnetron sputtering. The dependencies of the growth mode and magnetic properties of the obtained iron nanostructures on both crystallographic surface orientation and on the direction of the very weak stray magnetic field from the magnetron gun were studied. Scanning tunneling microscopy images showed strong dependence of the Fe grains’ orientation on the stray field direction in relation to the substrate’s steps demonstrating that, under appropriately directed magnetic field, Si surfaces can be used as templates for well-defined self-assembled iron nanostructures. Magneto-optical Kerr effect hysteresis loops showed an easy-axis coercivity almost one order of magnitude smaller for the film deposited with stray field applied along the steps, accompanied with a change in the magnetization reversal mode. Phenomenological models involving coherent rotation and/or domain-wall unpinning were used for the interpretation of these results.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofJournal of applied physics. Melville. Vol. 106, no. 2 (July 2009), 023904, 4 p.pt_BR
dc.rightsOpen Accessen
dc.subjectMagnetismopt_BR
dc.subjectMateriais nanoestruturadospt_BR
dc.subjectFilmes finos magneticospt_BR
dc.subjectForca coercivapt_BR
dc.subjectHisterese magnéticapt_BR
dc.subjectReversão de magnetizaçãopt_BR
dc.subjectMicroscopia de tunelamentopt_BR
dc.titleMagnetic-field-dependent morphology of self-organized Fe on stepped Si(111) surfacespt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000726226pt_BR
dc.type.originEstrangeiropt_BR


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