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dc.contributor.authorHasle, Ida
dc.contributor.authorWaldow, Stephan P.
dc.contributor.authorGries, Ute N.
dc.contributor.authorDe Souza, Roger A.
dc.contributor.authorVøllestad, Einar
dc.contributor.authorHaugsrud, Reidar
dc.date.accessioned2022-05-09T08:17:28Z
dc.date.available2022-05-09T08:17:28Z
dc.date.created2021-09-27T12:30:56Z
dc.date.issued2021
dc.identifier.issn2050-7488
dc.identifier.urihttps://hdl.handle.net/11250/2994686
dc.description.abstractB-site cation inter-diffusion in the ABO3 perovskite yttrium-substituted barium zirconate (BZY) was studied at temperatures from 1100 to 1460 °C under reducing and oxidising conditions. The experiments followed two different approaches using Ce as a chemical tracer for Zr. By fitting diffusion profiles of the cation obtained by either Electron Probe Microanalysis (EPMA) or Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS), we determined bulk, grain-boundary and effective diffusion coefficients. The activation energies of bulk diffusion (4.5 ± 0.4 eV) are similar to the migration enthalpy obtained by a computational approach (∼4 eV). On this basis, we conclude that the activation energies correspond to the migration enthalpies, assuming that the concentration of Zr vacancies in the bulk was frozen-in. Grain-boundary diffusion coefficients were found to be more than four orders of magnitude higher than the corresponding bulk values, while the activation energies of grain-boundary diffusion are relatively similar to those for bulk. This was attributed to higher concentrations of cation vacancies in space-charge layers at the boundaries. Overall, the results show that BZY electrolytes are highly stable towards degradation related to B-site cation diffusion.en_US
dc.language.isoengen_US
dc.publisherRoyal Society of Chemistryen_US
dc.relation.urihttps://app.cristin.no/projects/show.jsf?id=500756
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjectDiffusjonen_US
dc.subjectDiffusionen_US
dc.subjectMaterialkjemien_US
dc.subjectMaterials chemistryen_US
dc.subjectEnergimaterialeren_US
dc.subjectEnergy Materialsen_US
dc.titleB-site cation inter-diffusion in yttrium substituted barium zirconateen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.subject.nsiVDP::Uorganisk kjemi: 442en_US
dc.subject.nsiVDP::Inorganic chemistry: 442en_US
dc.source.pagenumber21142-21150en_US
dc.source.volume9en_US
dc.source.journalJournal of Materials Chemistry Aen_US
dc.source.issue37en_US
dc.identifier.doi10.1039/D1TA02391H
dc.identifier.cristin1939016
dc.relation.projectNorges forskningsråd: 228355en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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