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Magnetism and Mössbauer study of formation of multi-core γ-Fe2O3 nanoparticles

dc.contributor.authorKamali, Saeed
dc.contributor.authorBringas Elizalde, Eugenio 
dc.contributor.authorHah, Hien-Yoong
dc.contributor.authorBates, Brian
dc.contributor.authorJohnson, Jacqueline A.
dc.contributor.authorJohnson, Charles E.
dc.contributor.authorStroeve, Pieter 
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.date.accessioned2017-11-24T17:03:12Z
dc.date.available2020-04-30T02:45:14Z
dc.date.issued2018-04-01
dc.identifier.issn0304-8853
dc.identifier.issn1873-4766
dc.identifier.urihttp://hdl.handle.net/10902/12380
dc.description.abstractA systematic investigation of magnetic nanoparticles and the formation of a core-shell structure, consisting of multiple maghemite (γ-Fe2O3) nanoparticles as the core and silica as the shell, has been performed using various techniques. High-resolution transmission electron microscopy clearly shows isolated maghemite nanoparticles with an average diameter of 13?nm and the formation of a core-shell structure. Low temperature Mössbauer spectroscopy reveals the presence of pure maghemite nanoparticles with all vacancies at the B-sites. Isothermal magnetization and zero-field-cooled and field-cooled measurements are used for investigating the magnetic properties of the nanoparticles. The magnetization results are in good accordance with the contents of the magnetic core and the non-magnetic shell. The multiple-core γ-Fe2O3 nanoparticles show similar behavior to isolated particles of the same size.es_ES
dc.description.sponsorshipWe thank the assistance by Dr. Peter Klavins at the Department of Physics, the University of California Davis, in performing the magnetization measurements. This research was partially supported by the Department of Energy, Office of Nuclear Energy, Nuclear Energy Program, under Grant No. DE-NE0000704es_ES
dc.format.extent11 p.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.rights© 2008, Elsevier. Licensed under the Creative Commons Reconocimiento-NoComercial-SinObraDerivadaes_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.sourceJournal of Magnetism and Magnetic Materials, 2018, 451, 131-136es_ES
dc.subject.otherMulti-core-shell nanoparticleses_ES
dc.subject.otherMaghemite nanoparticleses_ES
dc.subject.otherMössbauer spectroscopyes_ES
dc.subject.otherHigh-resolution transmission electron microscopyes_ES
dc.subject.otherMagnetization measurementses_ES
dc.subject.otherNanomagnetismes_ES
dc.titleMagnetism and Mössbauer study of formation of multi-core γ-Fe2O3 nanoparticleses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherVersionhttps://doi.org/10.1016/j.jmmm.2017.10.102es_ES
dc.rights.accessRightsopenAccesses_ES
dc.identifier.DOI10.1016/j.jmmm.2017.10.102
dc.type.versionacceptedVersiones_ES


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