The incorporation of plutonium in lanthanum zirconate pyrochlore

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dc.contributor.authorGregg, DJen_AU
dc.contributor.authorZhang, YJen_AU
dc.contributor.authorMiddleburgh, SCen_AU
dc.contributor.authorConradson, SDen_AU
dc.contributor.authorTriani, Gen_AU
dc.contributor.authorLumpkin, GRen_AU
dc.contributor.authorVance, ERen_AU
dc.date.accessioned2015-09-30T01:16:32Zen_AU
dc.date.available2015-09-30T01:16:32Zen_AU
dc.date.issued2013-11-01en_AU
dc.date.statistics2015-09-24en_AU
dc.description.abstractThe incorporation of plutonium (Pu) within lanthanum zirconate pyrochlore was investigated using air, argon, and N2–3.5%H2 sintering atmospheres together with Ca2+ and Sr2+ incorporation for charge compensation. The samples have been characterised in the first instance by X-ray diffraction (XRD), scanning electron microscopy (SEM) and diffuse reflectance spectroscopy (DRS). The results show Pu can be exchanged for La3+ on the A-site with and without charge compensation and for Zr4+ on the B-site. DRS measurements were made over the wavenumber range of 4000–19,000 cm−1 and the Pu in all air- and argon-sintered samples was found to be present as Pu4+ while that in samples sintered in N2–3.5%H2 was present as Pu3+. The Pu valence was confirmed for three of the samples using X-ray near-edge absorption spectroscopy (XANES). Pu valences >4+ were not observed in any of the samples. © 2013, Elsevier B.V.en_AU
dc.identifier.citationGregg, D. J., Zhang, Y., Middleburgh, S. C., Conradson, S. D., Triani, G., Lumpkin, G. R., & Vance, E. R. (2013). The incorporation of plutonium in lanthanum zirconate pyrochlore. Journal of Nuclear Materials, 443(1-3), 444-451. doi.10.1016/j.jnucmat.2013.07.030en_AU
dc.identifier.govdoc6108en_AU
dc.identifier.issn0038-1098en_AU
dc.identifier.issue1-3en_AU
dc.identifier.journaltitleJournal of Nuclear Materialsen_AU
dc.identifier.pagination444-451en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.jnucmat.2013.07.030en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/6269en_AU
dc.identifier.volume443en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectPlutoniumen_AU
dc.subjectArgonen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectScanning electron microscopyen_AU
dc.subjectLanthanumen_AU
dc.subjectPyrochloreen_AU
dc.titleThe incorporation of plutonium in lanthanum zirconate pyrochloreen_AU
dc.typeJournal Articleen_AU
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