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Controlling of magnetocaloric effect in Gd2O3@SiO2 nanocomposites by substrate dimensionality and particles’ concentration

dc.creatorZelenáková, Adrianaes
dc.creatorHubrovkák, Pavoles
dc.creatorKapusta, Ondrejes
dc.creatorBerkutova, Annaes
dc.creatorZelenák, Vladimires
dc.creatorFranco García, Victorinoes
dc.date.accessioned2018-03-22T08:30:56Z
dc.date.available2018-03-22T08:30:56Z
dc.date.issued2017
dc.identifier.citationZelenáková, A., Hubrovkák, P., Kapusta, O., Berkutova, A., Zelenák, V. y Franco García, V. (2017). Controlling of magnetocaloric effect in Gd2O3@SiO2 nanocomposites by substrate dimensionality and particles’ concentration. AIP Advances, 8, 1-10.
dc.identifier.issn2158-3226es
dc.identifier.urihttps://hdl.handle.net/11441/71230
dc.description.abstractThe magnetocaloric effect (MCE) of hybrid nanostructures consisting of fine gadolinium oxide (Gd2O3) nanoparticles with diameter 7 nm and 12 nm loaded into the pores of the periodically ordered mesoporous silica with hexagonal (SBA-15) or cubic (SBA-16) symmetry were investigated. The concentration effect of the added nanoparticles (NPs) and the effect of the silica matrix dimensionality on the structural properties, magnetization M(H), magnetic entropy change SM, and parameters A(T) and B(T) derived from Arrott plots were studied in four samples. Examined nanocomposites exhibited reasonable high values of magnetic entropy change SM varying from 29 J/kgK established for Gd2O3@SBA-15 up to 64 J/kgK observed in Gd2O3@SBA-16 at maximal field change 5 T at low temperatures. This suggests that studied nanocomposites, where diamagnetic silica matrices serve as nanoreactors for growth of Gd2O3 nanoparticles and their symmetry strongly affect magnetic properties of whole composites, could be feasible for cryomagnetic refrigeration applicationses
dc.description.sponsorshipDevelopment Agency under the contracts APVV-15-0520 APVV-14-0073 APVV-15-0115es
dc.description.sponsorshipVEGA No. 1/0745/17 No. 1/0377/16es
dc.formatapplication/pdfes
dc.language.isoenges
dc.publisherAIP Publishinges
dc.relation.ispartofAIP Advances, 8, 1-10.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.titleControlling of magnetocaloric effect in Gd2O3@SiO2 nanocomposites by substrate dimensionality and particles’ concentrationes
dc.typeinfo:eu-repo/semantics/articlees
dcterms.identifierhttps://ror.org/03yxnpp24
dc.type.versioninfo:eu-repo/semantics/publishedVersiones
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Física de la Materia Condensadaes
dc.relation.projectIDAPVV-15-0520es
dc.relation.projectIDAPVV-14-0073es
dc.relation.projectIDAPVV-15-0115es
dc.relation.projectIDNo. 1/0745/17es
dc.relation.projectIDNo. 1/0377/16es
dc.relation.publisherversionhttp://dx.doi.org/ 10.1063/1.4993974es
dc.identifier.doi10.1063/1.4993974es
idus.format.extent10 p.es
dc.journaltitleAIP Advanceses
dc.publication.issue8es
dc.publication.initialPage1es
dc.publication.endPage10es
dc.contributor.funderMinistry of Education, Science, Research and Sports. Slovak

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