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dc.contributor.authorSHVETS, IGORen
dc.contributor.authorARORA, SUNILen
dc.date.accessioned2010-07-15T16:53:35Z
dc.date.available2010-07-15T16:53:35Z
dc.date.issued2005en
dc.date.submitted2005en
dc.identifier.citationArora, S. K.; Sofin, R. G. S.; Shvets, I. V., Magnetoresistance enhancement in epitaxial magnetite films grown on vicinal substrates, Physical Review B (Condensed Matter and Materials Physics), 72, 2005, 134404 - 134410en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/40395
dc.descriptionPUBLISHEDen
dc.description.abstractThe magnetoresistance MR behavior of epitaxial magnetite Fe3O4 grown on low-vicinal small miscut and high-vicinal large miscut MgO substrates is compared. Magnetization measurements on Fe3O4 films on high-vicinal substrates showed reduced magnetic moment as compared with the films grown on low-vicinal MgO, which correlates well with the expected reduction in magnetic moment due to step edge induced additional antiphase boundaries APBs with out-of-plane shift vectors. The MR is significantly higher 12.3% at 2 T for a 45 nm Fe3 O4 film on high-vicinal substrate than that observed 7.2% at 2 T for a film on low-vicinal substrate. A strong anisotropy in the MR is observed in correlation with the direction of atomic step edges. In addition to the increase in MR, the field dependency of the MR is also modified. The observed modification in the magnetotransport behavior of epitaxial Fe3O4 films is attributed to an enhanced spin scattering arising due to the presence of atomic height steps that lead to the formation of a greater density of antiferromagnetically coupled APBs.en
dc.description.sponsorshipThe authors gratefully acknowledge the financial support from the Science Foundation Ireland to carry out the work under the Project No. 00/PI.1/C042.en
dc.format.extent134404 - 134410en
dc.language.isoenen
dc.relation.ispartofseriesPhysical Review B (Condensed Matter and Materials Physics)en
dc.relation.ispartofseries72en
dc.rightsYen
dc.subjectSurface Physicsen
dc.subjectthin filmsen
dc.titleMagnetoresistance enhancement in epitaxial magnetite films grown on vicinal substratesen
dc.typeJournal Articleen
dc.contributor.sponsorScience Foundation Ireland (SFI)en
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/ivchvetsen
dc.identifier.rssinternalid30509en
dc.identifier.rssurihttp://dx.doi.org/10.1103/PhysRevB.72.134404en


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