Synthesis and characterization of Nd2Sn x Zr2−x O7 pyrochlore ceramics.

Abstract: Pyrochlore structured Nd2Sn x Zr2−x O7 (x=0–2) ceramics were prepared by a new chemical synthesis route in an aqueous media. Raman spectra and X-ray diffraction patterns confirmed the formation of the pyrochlore structure after sintering at 1400°C. SEM results showed pelletized materials became dense with increasing Zr/Sn mole ratio and sintering temperature. These candidate materials have characteristic structures for the development of nuclear waste forms or inert matrix nuclear fuels. [Copyright &y& Elsevier]