Title: Crystallographic structure and charge distribution of AUO4 and A3UO6 uranates (A = Ca, Sr, Ba or Pb)
Authors: PRIEUR DAMIENPOPA KARINVIGIER JEAN-FRANCOISSCHEINOST ANDREASMARTIN PHILIPPE
Citation: JOURNAL OF NUCLEAR MATERIALS vol. 516 p. 303-308
Publisher: ELSEVIER SCIENCE BV
Publication Year: 2019
JRC N°: JRC115688
ISSN: 0022-3115 (online)
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC115688
DOI: 10.1016/j.jnucmat.2019.01.045
Type: Articles in periodicals and books
Abstract: AUO4 and A3UO6 uranates (A = Ca, Sr, Ba or Pb) have been synthesized by solid state reaction. Their crystallographic structures have been studied combining Powder X-ray Diffraction (PXRD) and Extended X-ray Absorption Fine Structure (EXAFS). Depending on the nature of the alkali earth metal, the uranates compounds crystallize in different structures, in which the uranium local environment around the atoms have been identified. The U geometry has been compared to the oxidation states determined from X-ray Absorption Near Edge Spectroscopy (XANES).
JRC Directorate:Nuclear Safety and Security

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