respectively. Pigments of stoichiometric composition corresponding to x ranging from 0 to 1 were obtained by conventional ceramic method and calcinated at 1100, 1200, 1300, 1400, 1500, and 1600 C.
respectively. Pigments of stoichiometric composition corresponding to x rangingfrom 0 to 1 were obtained by conventional ceramic method and calcinated at 1100, 1200, 1300, 1400,1500, and 1600 C.