Influence of synthesis atmosphere on the solid solubility of uranium at B-site of Nd2Zr2O7 pyrochlore

Synthesis and feasibility studies of doping U at Ti site of Y2Ti2O7 as a radioactive waste immobilization matrix

“…Similar vibrational modes were reported in the literature for oxygen atoms in cuboctahedral clusters, ascertaining fluorite formation during synthesis. 62,63 Thus the Raman studies also corroborate XRD results.…”

“…For a stable pyrochlore structure the r A /r B ratio must fall within 1.46-1.78. 32,33 Based on this ratio, cubic pyrochlore, defective fluorite or at times monoclinic phase can be resulted. The deviation from the lower value gives rise to an anion-deficient fluorite structure (for r A /r B < 1.46), with array of A and B ions muddled.…”

Hybrid Sol–Gel and Spark Plasma Sintering to Produce Perovskite-like SrTiO3 Ceramics for Radioactive Waste Isolation

“…Specifically, methods have been proposed and tested, and they are thus intensely studied for producing materials meeting established standards regarding composition and form. This approach entails preparing initial RAW containing various nuclides and their subsequent thermal consolidation into a dense matrix [3][4][5]. The methodology allows for the extraction of radionuclides from primary wastes and their incorporation into an inert structure to ensure long-term isolation.…”