dc.creator | Moshtaghion, Bibi Malmal | es |
dc.creator | Laguna Bercero, Miguel Ángel | es |
dc.creator | Peña, José I. | es |
dc.creator | Gómez García, Diego | es |
dc.creator | Domínguez Rodríguez, Arturo | es |
dc.date.accessioned | 2022-12-21T12:23:07Z | |
dc.date.available | 2022-12-21T12:23:07Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 0272-8842 | es |
dc.identifier.issn | 1873-3956 | es |
dc.identifier.uri | https://hdl.handle.net/11441/140726 | |
dc.description.abstract | This 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.sponsorship | Ministerio de Ciencia e Innovación de España-PID2019-103847RJ-I00, MAT2016-77769-R, MAT2015-68078-R, PID2019-107106RB-C32 y MAT2015-71411-R | es |
dc.description.sponsorship | Junta de Andalucía-P18-RTJ-1972 | es |
dc.description.sponsorship | Gobierno de Aragón, España y fondos FEDER de la Unión Europea-DGA T02_17R | es |
dc.format | application/pdf | es |
dc.format.extent | 5 p. | es |
dc.language.iso | eng | es |
dc.publisher | Elsevier | es |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Tantalum-doped zirconia | es |
dc.subject | Spark plasma sintering | es |
dc.subject | Cationic conductivity | es |
dc.title | Cation-driven electrical conductivity in Ta-doped orthorhombic zirconia ceramics | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/acceptedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física de la Materia Condensada | es |
dc.relation.projectID | PID2019-103847RJ-I00 | es |
dc.relation.projectID | P18-RTJ-1972 | es |
dc.relation.projectID | MAT2016-77769-R | es |
dc.relation.projectID | DGA T02_17R | es |
dc.relation.projectID | MAT2015-68078-R | es |
dc.relation.projectID | PID2019-107106RB-C32 | es |
dc.relation.projectID | MAT2015-71411-R | es |
dc.relation.publisherversion | https://doi.org/10.1016/j.ceramint.2020.10.227 | es |
dc.identifier.doi | 10.1016/j.ceramint.2020.10.227 | es |
dc.journaltitle | Ceramics International | es |
dc.publication.volumen | 47 | es |
dc.publication.issue | 5 | es |
dc.publication.initialPage | 7248 | es |
dc.publication.endPage | 7252 | es |
dc.contributor.funder | Ministerio de Ciencia e Innovación (MICIN). España | es |
dc.contributor.funder | Junta de Andalucía | es |
dc.contributor.funder | Gobierno de Aragón | es |
dc.contributor.funder | European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) | es |