Synthesis of the (Zn, M)TiO3 (M=Co, Ni, Co0.5Ni0.5) solid solution by a sol-gel route

The solid solution of (Zn1-xCox)TiO3, (Zn1-xNix)TiO3 and [Zn1-x(CO0.5Ni0.5)]TiO3 based on ZnTiO3 system were synthesized at low temperature (800 T) by a modified sol-gel route. The phase distribution and thermal stability of these products were conducted by using X-ray diffraction (XRD) analysis and differential scanning calorimetry (DSC) measurements. The XRD results showed that the single phase of hexagonal (Zn1-xCox)TiO3, (Zn1-xNix)TiO3, and [Zn1-x(CO0.5Ni0.5)(x)]TiO3 could only be obtained at 0.5 <= x <= 1, 0.9 <= x <= 1, and 0.8 <= x <= 1, respectively. Meanwhile, the thermal analysis results indicated that the thermal stability of these ZnTiO3-based ceramics were enhanced by the increasing amount. Of cobalt substitution, and that cobalt substitution appeared more remarkably than nickel substitution.