Segregation in titanium dioxide co-doped with indium and niobium

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dc.contributor.authorAtanacio, AJen_AU
dc.contributor.authorAlim, MAen_AU
dc.contributor.authorIonescu, Men_AU
dc.contributor.authorNowotny, Jen_AU
dc.date.accessioned2020-03-23T23:53:28Zen_AU
dc.date.available2020-03-23T23:53:28Zen_AU
dc.date.issued2016-10-06en_AU
dc.date.statistics200-03-20en_AU
dc.description.abstractThis work reports the effect of oxygen activity on surface segregation for TiO2 co-doped with two cations, indium and niobium (0.076 at.% In + 0.103 at.% Nb). In this work, we studied the effect of annealing at 1273 K in the gas phase of controlled oxygen activity on surface segregation of both ions. The applied oxygen activity included pure oxygen, p(O2) = 100 kPa, and argon, p(O2) = 10 Pa. The segregation-induced concentration gradients were determined using both secondary ion mass spectrometry and X-ray photoelectron spectroscopy. The obtained results indicate that annealing of the studied TiO2 specimens in argon results in cooperative segregation of both ions leading to the formation of a surface structure involving comparative concentrations of both cations. However, annealing in oxygen results in preferential segregation of indium leading to the formation of a In2TiO5-type surface structure. The obtained results are considered in terms of the effect of multicomponent segregation on processing of the surface layer with controlled properties that are desired for specific applications. The present work indicates that oxygen activity may be used as the parameter in surface engineering of the solid solution. © 2016 The American Ceramic Societyen_AU
dc.identifier.citationAtanacio, A. J., Alim, M. A., Bak, T., Ionescu, M., & Nowotny, J. (2017). Segregation in titanium dioxide co-doped with indium and niobium. Journal of the American Ceramic Society, 100(1), 419-428. doi:10.1111/jace.14490en_AU
dc.identifier.govdoc8329en_AU
dc.identifier.issn1551-2916en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleJournal of the American Ceramic Societyen_AU
dc.identifier.pagination419-428en_AU
dc.identifier.urihttps://doi.org/10.1111/jace.14490en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9205en_AU
dc.identifier.volume100en_AU
dc.language.isoenen_AU
dc.publisherAmerican Ceramic Societyen_AU
dc.subjectTitaniumen_AU
dc.subjectIndiumen_AU
dc.subjectSegregationen_AU
dc.subjectDefectsen_AU
dc.subjectOxygenen_AU
dc.subjectNiobiumen_AU
dc.subjectMass spectroscopyen_AU
dc.subjectSurfacesen_AU
dc.titleSegregation in titanium dioxide co-doped with indium and niobiumen_AU
dc.typeJournal Articleen_AU
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