Crystal chemistry of transuranium tungsten bronzes TuxWO3 (Tu = Np,Pu, Am) |
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Authors: | Alain Tabuteau Eric Simoni Monique Pagès |
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Affiliation: | Laboratoire Curie, Service des éléments transuraniens 11 rue P. et M. Curie, 75231 Paris Cedex 05 France |
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Abstract: | Three transuranium tungsten bronzes have been synthetised for the first time in the systems TuO2-WO3-W systems (Tu=Np, Pu, Am). They were identified using X-ray powder diffraction; their structures are of perovskite type. Both plutonium and americium bronzes show a trivalent oxidation state, whereas Mőssbauer spectra reveal clearly a NpIV ion in NpxWO3. |
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