Structure and conductivity of new fluorite-type Bi2O3-Er2O3-PbO materials

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dc.contributor.authorWebster, NASen_AU
dc.contributor.authorLing, CDen_AU
dc.contributor.authorRaston, CLen_AU
dc.contributor.authorLincoln, FJen_AU
dc.date.accessioned2008-04-18T07:00:18Zen_AU
dc.date.accessioned2010-04-30T05:03:12Zen_AU
dc.date.available2008-04-18T07:00:18Zen_AU
dc.date.available2010-04-30T05:03:12Zen_AU
dc.date.issued2007-10en_AU
dc.date.statistics2007-10en_AU
dc.description.abstractFluorite-type fcc phases have been synthesised in the system Bi2O3-Er2O3-PbO by solid state reaction, and a partial air-quenchable domain of the fluorite-type phase has been established. Some of these materials display high oxide ion conductivities, notably (BiO1.5)(0.80)(ErO1.5)(0.11)(PbO)(0 09) and (BiO1.5)(0.85)(ErO1.5)(0.12)(PbO)(0.03), which have conductivities of 0.49 and 0.72 S cm(-1) at 750 degrees C, respectively, placing them among the most conductive Bi2O3-based materials. Conductivity was found to increase with increasing Pb2+/Er3+ ratio and decreasing (Er3+ + Pb2+)/Bi3+ ratio. Positional disorder in the oxide ion sublattice was characterised by neutron powder diffraction. At room temperature, the oxide ion sublattice appeared to be completely disordered, with oxide ions only in 32f and 48i sites, and changes in occupancy with increasing Pb2+/Er3+ and (Er3+ + Pb2+)/Bi3+ ratios were not significant. At 700 degrees C, there appeared to be oxide ions in 8c sites for the material (BiO1.5)(0.80)(ErO1.5)(0.11)(PbO)(0 09), with a correspondingly smaller occupancy of the 32f sites, whilst the occupancy of the 48i sites had not changed significantly. © 2007, Elsevier Ltd.en_AU
dc.identifier.citationWebster, N. A. S., Ling, C. D., Raston, C. L., & Lincoln, F. J. (2007). The structure and conductivity of new fluorite-type Bi2O3-Er2O3-PbO materials. Solid State Ionics, 178(25-26), 1451-1457. doi:10.1016/j.ssi.2007.08.008en_AU
dc.identifier.govdoc1206en_AU
dc.identifier.issn0167-2738en_AU
dc.identifier.issue25-26en_AU
dc.identifier.journaltitleSolid State Ionicsen_AU
dc.identifier.pagination1451-1457en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.ssi.2007.08.008en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/1084en_AU
dc.identifier.volume178en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectIonic conductivityen_AU
dc.subjectElectrolytesen_AU
dc.subjectNeutronsen_AU
dc.subjectDiffractionen_AU
dc.subjectIonsen_AU
dc.subjectFluoriteen_AU
dc.titleStructure and conductivity of new fluorite-type Bi2O3-Er2O3-PbO materialsen_AU
dc.typeJournal Articleen_AU
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