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1 PublicationFurther insights into the chemistry of the Bi-U-O system
Popa, K.; Prieur, D.; Manara, D.; Naji, M.; Vigier, J.-F.; Martin, P.; Blanco, O. D.; Scheinost, A. C.; Prüssmann, T.; Vitova, T.; Raison, P. E.; Somers, J.; Konings, R. J. M.
Abstract
Cubic fluorite-type phases have been reported in the UIVO2-Bi2O3 system for the entire compositional range, but an unusual non-linear variation of the lattice parameter with uranium substitution has been observed. In the current extensive investigation of the uranium(IV) oxide - bismuth (III) oxide system, this behaviour of the lattice parameter evolution with composition has been confirmed and its origin identified. Even under inert atmosphere at 800 oC, UIV oxidises to UV/UVI as a function of the substitution degree. Thus, using a combination of three methods (XRD, XANES and Raman) we have identified the formation of the BiUVO4 and Bi2UVIO6 compounds, within this series. Moreover, we present here the Rietveld refinement of BiUVO4 at room temperature and we report the thermal expansion of both BiUVO4 and Bi2UVIO6 compounds.
Keywords: XRD; XANES; XAFS; Raman; lead bismuth eutectic; fast reactor
Involved research facilities
- Rossendorf Beamline at ESRF DOI: 10.1107/S1600577520014265
Related publications
- DOI: 10.1107/S1600577520014265 is cited by this (Id 23406) publication
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Dalton Transactions 45(2016), 7847-7855
DOI: 10.1039/C6DT00735J
Cited 29 times in Scopus
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