Ab initio structure determinations of high-performance radioactive waste forms
Immobilisation of high-level radioactive wastes in stable matrices for long-term storage or geological disposal is a key step in closing the nuclear fuel cycle. Titanate minerals have shown much promise in their capacity to take up radioactive elements into their crystal structures at regular lattice sites in pyrochlore and brannerite phases. Previously unreported uranyl titanates BaUTiO6 and Na2U3Ti2O11 have been synthesised under argon at 1400 and 1250 °C, respectively and their structures...[Show more]
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