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The chemistry of the phosphates of barium and tetravalent cations in the 1:1 stoichiometry |
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| Authors: | Karin Popa Damien Bregiroux Rudy J.M. Konings Aurelian F. Popa Philippe E. Raison |
| Affiliation: | a European Commission, Joint Research Centre, Institute for Transuranium Elements, P.O. Box 2340, 76125 Karlsruhe, Germany b “Al.I. Cuza” University, Department of Inorganic and Analytical Chemistry, 11-Carol I Blvd., 700506 Iasi, Romania c Université Pierre et Marie Curie-Paris 6, CNRS UMR 7574, Chimie de la Matière Condensée de Paris, 4 Place Jussieu Paris, F-75005, France d Faculté des Sciences-Université de Nantes, Institut des Matériaux Jean Rouxel-Laboratoire de Chimie des Solides, B.P. 32229, 44322 Nantes Cedex 3, France e Institut für Mineralogie, Westfälische Wilhelms-Universiät, Corrensstr., 24, 48149 Münster, Germany |
| Abstract: | The chemistry of phosphates of barium and tetravalent cations [BaMIV(PO4)2] is reviewed. Such phosphates crystallise in the C2/m space group for MIV=Ti, Zr, Hf, Ge, Sn, and Mo, and in the P21/n space group for BaTh(PO4)2. The existence of BaMIV(PO4)2 in which MIV=Pb, Ce, and U is further evaluated. Several aspects, such as phase transitions in the compounds with yavapaiite structure, solid solutions of BaMIV(PO4)2 compounds and practical applications are briefly discussed. |
| Keywords: | Barium Ceramics Conditioning Crystal structure Phosphates Tetravalent cations Phase transition |
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