Deepa, M; Prabhakar Rao, P; Sumi, S; Radhakrishnan, A N P; Peter Koshy
(Wiley, 2010)
A series of quaternary powellites with varying cerium contents in a Ca-Ce-Nb-M-O (where M=Mo or W) system has been synthesized through the solid-state route. Powder X-ray diffraction analysis shows that these compounds ...