Anion Disorder in Lanthanoid Zirconates Gd2-xTbxZr2O7

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dc.contributor.authorReynolds, EMen_AU
dc.contributor.authorBlanchard, PERen_AU
dc.contributor.authorKennedy, BJen_AU
dc.contributor.authorLing, CDen_AU
dc.contributor.authorLiu, Sen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorZhang, Zen_AU
dc.contributor.authorCuello, GJen_AU
dc.contributor.authorTadich, Aen_AU
dc.contributor.authorJang, LYen_AU
dc.date.accessioned2013-11-25T23:02:16Zen_AU
dc.date.available2013-11-25T23:02:16Zen_AU
dc.date.issued2013-08-05en_AU
dc.date.statistics2013-11-26en_AU
dc.description.abstractThe pyrochlore?defect fluorite order?disorder transition has been studied for a series of oxides of the type Gd2?xTbxZr2O7 by a combination of diffraction and spectroscopy techniques. Synchrotron X-ray diffraction data suggest an abrupt transition from the coexistence of pyrochlore and defect fluorite phases to a single defect fluorite phase with increasing Tb content. However neutron diffraction data, obtained at ? ≈ 0.497 Å for all Gd-containing samples to minimize absorption, not only provide evidence for independent ordering of the anion and cation sublattices but also suggest that the disorder transition across the pyrochlore?defect fluorite boundary of Ln2Zr2O7 is rather gradual. Such disorder was also evident in X-ray absorption measurements at the Zr L3-edge, which showed a gradual increase in the effective coordination number of the Zr from near 6-coordinate in the pyrochlore rich samples to near 7-coordinate in the Tb rich defect fluorites. These results indicate the presence of ordered domains throughout the defect fluorite region, and demonstrate the gradual nature of the order?disorder transition across the Gd2?xTbxZr2O7 series. © 2013, American Chemical Society.en_AU
dc.identifier.citationReynolds, E., Blanchard, P. E. R., Kennedy, B. J., Ling, C. D., Liu, S., Avdeev, M., Zhang, Z., Cuello, G. J., Tadich, A., & Jang, L.-Y. (2013). Anion Disorder in Lanthanoid Zirconates Gd2-xTbxZr2O7. Inorganic Chemistry, 52, 8409-8415. doi:10.1021/ic4009703en_AU
dc.identifier.govdoc5051en_AU
dc.identifier.issn0020-1669en_AU
dc.identifier.journaltitleInorganic Chemistryen_AU
dc.identifier.pagination8409-8415en_AU
dc.identifier.urihttp://dx.doi.org/10.1021/ic4009703en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5003en_AU
dc.identifier.volume52en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Society.en_AU
dc.subjectPhase transformationsen_AU
dc.subjectAustraliaen_AU
dc.subjectGadoliniumen_AU
dc.subjectTerbiumen_AU
dc.subjectZirconiumen_AU
dc.subjectAnionsen_AU
dc.subjectSpectroscopyen_AU
dc.subjectDiffractionen_AU
dc.subjectCationsen_AU
dc.subjectFluoriteen_AU
dc.titleAnion Disorder in Lanthanoid Zirconates Gd2-xTbxZr2O7en_AU
dc.typeJournal Articleen_AU
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