Structural studies of SrTcO3, CaTcO3, and Pb2Tc2O7-d

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dc.contributor.authorThorogood, GJen_AU
dc.contributor.authorKennedy, BJen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorTing, Jen_AU
dc.contributor.authorZhang, Zen_AU
dc.contributor.authorCarter, MLen_AU
dc.date.accessioned2021-08-02T04:27:00Zen_AU
dc.date.available2021-08-02T04:27:00Zen_AU
dc.date.issued2011-08-22en_AU
dc.date.statistics2021-07-27en_AU
dc.description.abstractLittle is known regarding the structure and properties of technetium oxides. This is mainly due to the absence of any naturally occurring Tc isotopes and the radioactivity of those available [1]. Tc oxides are important since 99Tc is found in nuclear waste and has a long half-life (2.13 × 105 yr). Tc is a 4d element, and like its lighter analogue Mn a 3d element it can adopt a number of oxidation states. 3d oxides are generally, but not always magnetic, while 4d and 5d oxides, with their more spatially extended d-orbitals tend not to be magnetic although SrRuO3 [2] is a notable exception. Here we have combined synchrotron X-ray and neutron diffraction to examine the structure of CaTcO3, SrTcO3 and Pb2Tc2O7-d. The only previous report on these materials was by Muller, White and Roy in 1964 [3]. They reported the existence of these materials and suggested the CaTcO3 and SrTcO3 were orthorhombic whereas the Pb2Tc2O7-d was reported as being pyrochlore. This earlier work concentrated on syn-thesis hence little is known about these three compounds and there has been no study of their structures or magnetic properties. © International Union of Crystallographyen_AU
dc.identifier.citationThorogood, G. J., Kennedy, B. J., Avdeev, M., Ting, J., Zhang, Z., & Carter, M. L. (2011). Structural studies of SrTcO3, CaTcO3, and Pb2Tc2O7-d. Poster presented at XXII IUCr Congress, Madrid, Spain, 22-30 August 2011. In Acta Crystallographica Section A: Foundations and Advances, A67, C603-C604. doi:10.1107/S0108767311084716en_AU
dc.identifier.conferenceenddate30 August 2011en_AU
dc.identifier.conferencenameXXII IUCr Congressen_AU
dc.identifier.conferenceplaceMadrid, Spainen_AU
dc.identifier.conferencestartdate22 August 2011en_AU
dc.identifier.issn2053-2733en_AU
dc.identifier.issuea1en_AU
dc.identifier.journaltitleActa Crystallographica Section A: Foundations and Advancesen_AU
dc.identifier.paginationC603-C604en_AU
dc.identifier.urihttps://doi.org/10.1107/S0108767311084716en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11219en_AU
dc.identifier.volume67en_AU
dc.language.isoenen_AU
dc.publisherInternational Union of Crystallographyen_AU
dc.subjectTechnetium oxidesen_AU
dc.subjectValenceen_AU
dc.subjectPyrochloreen_AU
dc.subjectOrthorhombic latticesen_AU
dc.subjectTechnetium compoundsen_AU
dc.subjectMagnetic propertiesen_AU
dc.titleStructural studies of SrTcO3, CaTcO3, and Pb2Tc2O7-den_AU
dc.typeConference Posteren_AU
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