Direct Observation of Magnetic Metastability in Individual Iron Nanoparticles

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dc.contributor.authorBalan, Ana
dc.contributor.authorDerlet, Peter M.
dc.contributor.authorFraile Rodríguez, Arantxa
dc.contributor.authorBansmann, Joachim
dc.contributor.authorYanes, Rocio
dc.contributor.authorNowak, Ulrich
dc.contributor.authorKleibert, Armin
dc.contributor.authorNolting, Frithjof
dc.date.accessioned2014-03-24T07:48:27Z
dc.date.available2014-03-24T07:48:27Z
dc.date.issued2014-03-10
dc.date.updated2014-03-24T07:48:28Z
dc.description.abstractX-ray photoemission electron microscopy combined with x-ray magnetic circular dichroism is used to study the magnetic properties of individual iron nanoparticles with sizes ranging from 20 down to 8 nm. While the magnetocrystalline anisotropy of bulk iron suggests superparamagnetic behavior in this size range, ferromagnetically blocked particles are also found at all sizes. Spontaneous transitions from the blocked state to the superparamagnetic state are observed in single particles and suggest that the enhanced magnetic energy barriers in the ferromagnetic particles are due to metastable, structurally excited states with unexpected life times
dc.format.extent5 p.
dc.format.mimetypeapplication/pdf
dc.identifier.idgrec635196
dc.identifier.issn0031-9007
dc.identifier.urihttps://hdl.handle.net/2445/52823
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.isformatofReproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevLett.112.107201
dc.relation.ispartofPhysical Review Letters, 2014, vol. 112, p. 107201-1-107201-5
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevLett.112.107201
dc.rights(c) American Physical Society, 2014
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.sourceArticles publicats en revistes (Física de la Matèria Condensada)
dc.subject.classificationFerro
dc.subject.classificationNanopartícules
dc.subject.classificationMetaestabilitat
dc.subject.classificationFerromagnetisme
dc.subject.classificationMatèria condensada
dc.subject.classificationMicroscòpia electrònica
dc.subject.otherIron
dc.subject.otherNanoparticles
dc.subject.otherMetastability
dc.subject.otherFerromagnetism
dc.subject.otherCondensed matter
dc.subject.otherElectron microscopy
dc.titleDirect Observation of Magnetic Metastability in Individual Iron Nanoparticles
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion

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