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dc.creatorMoshtaghion, Bibi Malmales
dc.creatorLaguna Bercero, Miguel Ángeles
dc.creatorPeña, José I.es
dc.creatorGómez García, Diegoes
dc.creatorDomínguez Rodríguez, Arturoes
dc.date.accessioned2022-12-21T12:23:07Z
dc.date.available2022-12-21T12:23:07Z
dc.date.issued2021
dc.identifier.issn0272-8842es
dc.identifier.issn1873-3956es
dc.identifier.urihttps://hdl.handle.net/11441/140726
dc.description.abstractThis paper is devoted to the study of the electrical conductivity of tantalum-doped zirconia ceramics prepared by spark plasma sintering. In this study, the temperature dependence of conductivity in as-prepared specimens and in those previously annealed in air is determined and compared. A semi-empirical model, which is based on the oxidation states of the cations, has been developed and successfully assessed. According to this, the conductivity is basically controlled by the diffusion of tetravalent zirconium cations in both cases, although the concentration of these species varies drastically with the amount of induced oxygen vacancies. This is a quite unexpected fact, since conductivity is normally controlled by anionic diffusion in zirconia ceramics. This option is forbidden here due to the presence of substitutional pentavalent cations. Therefore, conductivity values are much lower than those reported in trivalent or divalent substitutional cation doped zirconia ceramics.es
dc.description.sponsorshipMinisterio de Ciencia e Innovación de España-PID2019-103847RJ-I00, MAT2016-77769-R, MAT2015-68078-R, PID2019-107106RB-C32 y MAT2015-71411-Res
dc.description.sponsorshipJunta de Andalucía-P18-RTJ-1972es
dc.description.sponsorshipGobierno de Aragón, España y fondos FEDER de la Unión Europea-DGA T02_17Res
dc.formatapplication/pdfes
dc.format.extent5 p.es
dc.language.isoenges
dc.publisherElsevieres
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectTantalum-doped zirconiaes
dc.subjectSpark plasma sinteringes
dc.subjectCationic conductivityes
dc.titleCation-driven electrical conductivity in Ta-doped orthorhombic zirconia ceramicses
dc.typeinfo:eu-repo/semantics/articlees
dcterms.identifierhttps://ror.org/03yxnpp24
dc.type.versioninfo:eu-repo/semantics/acceptedVersiones
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Física de la Materia Condensadaes
dc.relation.projectIDPID2019-103847RJ-I00es
dc.relation.projectIDP18-RTJ-1972es
dc.relation.projectIDMAT2016-77769-Res
dc.relation.projectIDDGA T02_17Res
dc.relation.projectIDMAT2015-68078-Res
dc.relation.projectIDPID2019-107106RB-C32es
dc.relation.projectIDMAT2015-71411-Res
dc.relation.publisherversionhttps://doi.org/10.1016/j.ceramint.2020.10.227es
dc.identifier.doi10.1016/j.ceramint.2020.10.227es
dc.journaltitleCeramics Internationales
dc.publication.volumen47es
dc.publication.issue5es
dc.publication.initialPage7248es
dc.publication.endPage7252es
dc.contributor.funderMinisterio de Ciencia e Innovación (MICIN). Españaes
dc.contributor.funderJunta de Andalucíaes
dc.contributor.funderGobierno de Aragónes
dc.contributor.funderEuropean Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER)es

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