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Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/47788
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dc.contributor.authorVázquez, Luis-
dc.contributor.authorChaboy, Jesús-
dc.contributor.authorBoada, R.-
dc.contributor.authorSantamaría, Jacobo-
dc.date.accessioned2012-04-02T09:42:21Z-
dc.date.available2012-04-02T09:42:21Z-
dc.date.issued2010-05-
dc.identifier.citationPhysical Review B 81(18): 184301 (2010)es_ES
dc.identifier.issn1098-0121-
dc.identifier.urihttp://hdl.handle.net/10261/47788-
dc.description9 páginas, 6 figuras, 3 tablas.-- PACS number(s): 66.30.H-.-- et al.es_ES
dc.description.abstractWe report on the effect of grain size on the ionic conductivity of yttria-stabilized zirconia samples synthesized by ball milling. Complex impedance measurements, as a function of temperature and frequency are performed on 10 mol % yttria-stabilized zirconia nanocrystalline samples with grain sizes ranging from 900 to 17 nm. Bulk ionic conductivity decreases dramatically for grain sizes below 100 nm, although its activation energy is essentially independent of grain size. The results are interpreted in terms of a space-charge layer resulting from segregation of mobile oxygen vacancies to the grain-boundary core. The thickness of this space-charge layer formed at the grain boundaries is on the order of 1 nm for large micron-sized grains but extends up to 7 nm when decreasing the grain size down to 17 nm. This gives rise to oxygen vacancies depletion over a large volume fraction of the grain and consequently to a significant decrease in oxide-ion conductivity.es_ES
dc.description.sponsorshipWe acknowledge financial support by Junta de Comunidades de Castilla-La Mancha through Project No. PAI-05-013, by CAM under Grant No. S2009/MAT-1756 (Phama), by Spanish MICINN through Grants No. MAT2008-06517-C02, No. MAT2008-06542-C04, and No. FIS2009-12964- C05-04, and Consolider Ingenio 2010 under Grant No. CSD2009-00013 (Imagine).es_ES
dc.language.isoenges_ES
dc.publisherAmerican Physical Societyes_ES
dc.relationS2009/MAT-1756/PHAMA-
dc.rightsopenAccesses_ES
dc.titleIonic conductivity of nanocrystalline yttria-stabilized zirconia: Grain boundary and size effectses_ES
dc.typeartículoes_ES
dc.identifier.doi10.1103/PhysRevB.81.184301-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1103/PhysRevB.81.184301es_ES
dc.identifier.e-issn1550-235X-
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.languageiso639-1en-
item.fulltextWith Fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.grantfulltextopen-
item.openairetypeartículo-
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