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Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/32281
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dc.contributor.authorFoerster, Michael-
dc.contributor.authorRebled, J. M. (José Manuel)-
dc.contributor.authorEstradé Albiol, Sònia-
dc.contributor.authorSánchez Barrera, Florencio-
dc.contributor.authorPeiró Martínez, Francisca-
dc.contributor.authorFontcuberta i Griñó, Josep-
dc.date.accessioned2012-10-11T11:44:15Z-
dc.date.available2012-10-11T11:44:15Z-
dc.date.issued2011-
dc.identifier.issn1098-0121-
dc.identifier.urihttp://hdl.handle.net/2445/32281-
dc.description.abstractSpinel ferrites are being considered for advanced spintronic applications. Here, we report on the magnetic properties of ultrathin (3-37 nm) epitaxial films of NiFe2O4 (NFO) on MgAl2O4 (MAO) and SrTiO3 (STO) single crystalline substrates. It is found that NFO films on STO display superparamagnetic response down to 50 K, whereas films grown on MAO display ferrimagnetic response up to room temperature. Microstructural information indicates that this distinct response can be attributed to the different growth mechanisms of the spinel ferrite on the isostructural MAO substrate (two-dimensional growth) and the perovskite STO (Volmer-Weber three-dimensional growth). We discuss the reasons for this distinct behavior and its relevance for the integration of ferrites in epitaxial heterostructures for tunnel devices.-
dc.format.extent7 p.-
dc.format.mimetypeapplication/pdf-
dc.language.isoeng-
dc.publisherAmerican Physical Society-
dc.relation.isformatofReproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevB.84.144422-
dc.relation.ispartofPhysical Review B, 2011, num. 84, p. 144422-1-144422-7-
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevB.84.144422-
dc.rights(c) American Physical Society, 2011-
dc.sourceArticles publicats en revistes (Enginyeria Electrònica i Biomèdica)-
dc.subject.classificationEspintrònica-
dc.subject.classificationPropietats magnètiques-
dc.subject.classificationPel·lícules fines-
dc.subject.classificationPedres precioses-
dc.subject.otherSpintronics-
dc.subject.otherMagnetic properties-
dc.subject.otherThin films-
dc.subject.otherPrecious stones-
dc.titleDistinct magnetism in ultrathin epitaxial NiFe2O4 films on MgAl2O4 and SrTiO3single crystalline substrates-
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/publishedVersion-
dc.identifier.idgrec601105-
dc.date.updated2012-10-11T11:44:15Z-
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess-
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