Structure and color of NixA1−3xB2xO2 (A=Ti, Sn; B=Sb, Nb) solid solutions

In this study, NixTi1−3xB2xO2 (B=Sb, Nb; 0⩽x⩽1/3) and Ni0.1A0.7B0.2O2 (A=Ti, Sn; B=Sb, Nb) compositions were synthesized by the ceramic method and characterized by X-ray diffraction, UV-V spectroscopy and CIELAB (Commission Internationale de lʹEclairage L*a*b*) parameters measurements. NixTi1−3xSb2xO2 (0⩽x⩽0.10) and NixTi1−3xNb2xO2 (0⩽x⩽0.30) solid solutions with rutile structure were obtained at 1300 °C/24 h. From Ni0.1A0.7B0.2O2 (A=Ti, Sn; B=Sb, Nb) compositions, a worse yellow color was obtained when A=Sn than when A=Ti. NixA1−3xB2xO2 with A=Ti, B=Nb, x⩽0.10 and 1000 °C⩽T ⩽1200 °C might be established as compositional and fired temperature ranges to obtain yellow ceramic pigments in these systems.