Role of Chemical Substitution in the Photoluminescence Properties of Cerium Samarium Tungstates Ce (2– x ) Sm ₓ (WO₄)₃ (0 ≤ x ≤ 0.3)

A series of cerium samarium tungstates Ce(2-x)Smx (WO4)3 with x ≤ 0.3 was synthesized by a coprecipitation method followed by thermal treatment at 1000 °C. The polycrystalline compounds were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence (PL) experiments. Using the Rietveld procedure, the decrease in cell parameters showed that a solid solution ...