Diffuse reflectance spectroscopy of Pu ions in zirconolite and perovskite

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dc.contributor.authorVance, ERen_AU
dc.contributor.authorFinnie, KSen_AU
dc.contributor.authorZhang, Yen_AU
dc.contributor.authorBegg, BDen_AU
dc.date.accessioned2025-09-12T03:26:11Zen_AU
dc.date.available2025-09-12T03:26:11Zen_AU
dc.date.issued2004en_AU
dc.descriptionPhysical copy held by ANSTO Library at DDC: 621.4838/39en_AU
dc.description.abstractDiffuse reflectance spectroscopy measurements at ambient temperatures have been made over the near infrared-visible range (5000-25000 cm−1) on polycrystalline ceramic zirconolite (CaZrTi2O7) and perovskite (CaTiO3) samples doped with Pu4+. The Pu concentrations were varied between 0.001 and 0.1 formula units. The Pu ions gave rise to a number of unresolved intraconfigurational f-f electronic absorption bands of a few hundred cm−1 bandwidth. Pu ions were targeted to substitute in the Ca sites as either trivalent or tetravalent species and as tetravalent species in the Zr site of zirconolite by the appropriate choice of charge compensation and firing atmosphere. There was approximate agreement of the Kubelka-Munk absorption intensities with Beer's Law for the different Pu4+ substitution schemes, apart from some “new” bands, attributed to impurities, observed in the most dilute zirconolite sample. No clear spectral differences were evident when Pu4+ was targeted to Ca or Zr sites in zirconolite. Samples prepared in reducing atmospheres with a view to producing Pu3+ were strongly absorbing, leading to suppression of Pu transitions. ©2004 Materials Research Society,.en_AU
dc.description.sponsorshipPhysical copy held by ANSTO Library at DDC: 621.4838/39.en_AU
dc.identifier.booktitleScientific basis for nuclear waste management XXVIII : symposium held April 13-16, 2004, San Francisco, California, U.S.A.en_AU
dc.identifier.citationVance, E. R., Finnie, K. S., Zhang, Y., & Begg, B. D. (2004). Diffuse reflectance spectroscopy of Pu ions in zirconolite and perovskite. Paper presented to Scientific basis for Nuclear Waste Management XXVIII : symposium held April 13-16, 2004, San Francisco, California, U.S.A. In Hanchar, J. M., & Browning, L. (eds.) (2004). Scientific basis for Nuclear Waste Management XXVIII : symposium held April 13-16, 2004, San Francisco, California, U.S.A. (Vol. 824(1), pp.185-190.en_AU
dc.identifier.conferenceenddate2004-04-16en_AU
dc.identifier.conferencenameScientific basis for nuclear waste management XXVIIIen_AU
dc.identifier.conferenceplaceSan Francisco, Californiaen_AU
dc.identifier.conferencestartdate2004-04-13en_AU
dc.identifier.editorsJohn M Hanchar & Laureen Browningen_AU
dc.identifier.isbn9781558997745en_AU
dc.identifier.issn2731-5894en_AU
dc.identifier.issn1946-4274en_AU
dc.identifier.pagination185-190en_AU
dc.identifier.placeofpublicationWarrendale, Pennsylvaniaen_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/16483en_AU
dc.identifier.volume824en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherSpringer Natureen_AU
dc.subjectSpectroscopyen_AU
dc.subjectZirconoliteen_AU
dc.subjectPerovskiteen_AU
dc.subjectAmbient temperatureen_AU
dc.subjectInfrared spectraen_AU
dc.subjectCeramicsen_AU
dc.subjectAdsorptionen_AU
dc.subjectPolycrystalsen_AU
dc.subjectImpuritiesen_AU
dc.titleDiffuse reflectance spectroscopy of Pu ions in zirconolite and perovskiteen_AU
dc.typeConference Paperen_AU
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