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Evidence of intrinsic magnetism in capped ZnO nanoparticles

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dc.contributor.authorCarmona Tejero, Noemí
dc.contributor.authorLLopis, J.
dc.contributor.authorRuiz González, María Luisa
dc.contributor.authorGonzalez-Calbet, José M.
dc.date.accessioned2023-06-20T03:57:00Z
dc.date.available2023-06-20T03:57:00Z
dc.date.issued2010-08-11
dc.description©2010 The American Physical Society. This work was partially supported by Spanish CICYT under Grants No. MAT2008-06542-C04-01, No. MAT2008-06517-C02-01, No. CSD2009-00013, and No. FIS-2008- 06249, and by the EU project “BONSAI” Grant No. LSHBCT-2006-037639. The synchrotron radiation experiments were performed at SPring-8 Proposals No. 2008B1773 and No. 2009B0024 and APS Proposal No. GUP-10283. We acknowledge to N. Kawamura, M. Suzuki, and M. Mizumaki, and to J. Freeland for their assistance during the SR experiments at SPring-8 and APS, respectively. R.B. acknowledges the Ministerio de Eduación y Ciencia of Spain for a PhD. Grant. M.A.L. acknowledges the Ministerio de Ciencia e Innovación of Spain for a Juan de la Cierva grant. Artículo firmado por once autores.
dc.description.abstractWe present here direct experimental evidence of the magnetic polarization of Zn atoms in ZnO nanoparticles capped with different materials by means of x-ray magnetic circular dichroism (XMCD). Our results demonstrate that the magnetism in this material is intrinsic and relays in the ZnO conduction band. The analysis of both x-ray absorption spectroscopy and XMCD signals points out the formation of a well-defined interface between ZnO and the capping molecule in which the exotic magnetism arises at the hybridized band formed among Zn and the bonding atom of the molecule. The magnetic properties of these systems should critically depend on the details of this interface which may offer a new insight into the different observations for seemingly identical materials.
dc.description.departmentDepto. de Física de Materiales
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipCICYT
dc.description.sponsorshipEU project “BONSAI”
dc.description.sponsorshipMinisterio de Eduación y Ciencia, Spain
dc.description.sponsorshipMinisterio de Ciencia e Innovacion (MICINN)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/32667
dc.identifier.doi10.1103/PhysRevB.82.064411
dc.identifier.issn1098-0121
dc.identifier.officialurlhttp://dx.doi.org/10.1103/PhysRevB.82.064411
dc.identifier.relatedurlhttp://journals.aps.org
dc.identifier.urihttps://hdl.handle.net/20.500.14352/44713
dc.issue.number6
dc.journal.titlePhysical review B
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.projectIDMAT2008-06542-C04-01
dc.relation.projectIDMAT2008-06517-C02-01
dc.relation.projectIDCSD2009-00013
dc.relation.projectIDFIS-2008- 06249
dc.relation.projectIDLSHBCT-2006-037639
dc.relation.projectIDM.A.L.
dc.rights.accessRightsopen access
dc.subject.cdu538.9
dc.subject.keywordSpin reorientation transition
dc.subject.keywordCircular-dichroism
dc.subject.keywordK-Edge
dc.subject.keywordOxides
dc.subject.keywordSurfaces
dc.subject.keywordNd2fe14b
dc.subject.keywordMoment
dc.subject.keywordProbe
dc.subject.ucmFísica de materiales
dc.subject.ucmFísica del estado sólido
dc.subject.unesco2211 Física del Estado Sólido
dc.titleEvidence of intrinsic magnetism in capped ZnO nanoparticles
dc.typejournal article
dc.volume.number82
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