Synthesis and structure of oxygen deficient lead-technetium pyrochlore, the first example of a valence V technetium oxide

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dc.contributor.authorKennedy, BJen_AU
dc.contributor.authorAblott, TAen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorCarter, MLen_AU
dc.contributor.authorLosurdo, Len_AU
dc.contributor.authorSaura-Múzquiz, Men_AU
dc.contributor.authorThorogood, KJen_AU
dc.contributor.authorTing, Jen_AU
dc.contributor.authorWallwork, KSen_AU
dc.contributor.authorZhang, ZMen_AU
dc.contributor.authorZhu, HLen_AU
dc.contributor.authorThorogood, GJen_AU
dc.date.accessioned2021-09-21T22:54:45Zen_AU
dc.date.available2021-09-21T22:54:45Zen_AU
dc.date.issued2021-07-01en_AU
dc.date.statistics2021-08-14en_AU
dc.description.abstractThe structure of lead-technetium pyrochlore has been refined in space group F d 3 ¯ m with a = 10.36584(2) Å using a combination of synchrotron X-ray and neutron powder diffraction data and confirmed via Electron Diffraction. The oxide is found to be oxygen deficient with a stoichiometry of Pb2Tc2O7-d. Displacive disorder of the Pb cations is evident from the refinements, as has been observed in Bi2Tc2O7-d. X-ray absorption spectroscopic measurements at the Tc K-edge demonstrate the valence of the Tc is greater than 4.0 as anticipated from the refined oxygen stoichiometry. Raman spectroscopy confirms the presence of disorder leading us to conclude that this pyrochlore is the first example of a valence V technetium oxide. © 2021 Kennedy, Ablott, Avdeev, Carter, Losurdo, Saura-Muzquiz, Thorogood, Ting, Wallwork, Zhang, Zhu and Thorogood. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY).en_AU
dc.identifier.articlenumber706269en_AU
dc.identifier.citationKennedy, B. J., Ablott, T. A., Avdeev, M., Carter, M. L., Losurdo, L., Saura-Muzquiz, M., Thorogood, K. J., Ting, J., Wallwork, K. S., Zhang, Z., Zhu, H., Thorogood, G. J. (2021). Synthesis and structure of oxygen deficient lead-technetium pyrochlore, the first example of a valence V technetium oxide. Frontiers in Chemistry, 9, 706269. doi:10.3389/fchem.2021.706269en_AU
dc.identifier.issn2296-2646en_AU
dc.identifier.journaltitleFrontiers in Chemistryen_AU
dc.identifier.urihttps://www.frontiersin.org/article/10.3389/fchem.2021.706269en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11763en_AU
dc.identifier.volume9en_AU
dc.language.isoenen_AU
dc.publisherFrontiers Mediaen_AU
dc.subjectCrystallographyen_AU
dc.subjectTechnetiumen_AU
dc.subjectPyrochloreen_AU
dc.subjectSpectroscopyen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectElectron diffractionen_AU
dc.subjectOxidesen_AU
dc.subjectLeaden_AU
dc.subjectCationsen_AU
dc.subjectAbsorptionen_AU
dc.subjectValenceen_AU
dc.subjectRaman spectroscopyen_AU
dc.titleSynthesis and structure of oxygen deficient lead-technetium pyrochlore, the first example of a valence V technetium oxideen_AU
dc.typeJournal Articleen_AU
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