Abstract

Synthesis of non-doped and Ni (0.5% and 1% atom) doped perovskite type SrTiO3 (STO) was carryout by solid-
state reaction route. The influence of doping amount of Ni on STO was investigated. The phase transformation
was confirmed by X-ray diffraction (XRD) analysis. All the compositions synthesized have cubic structure
similar to undoped SrTiO3. Average grain sizes of pure and Nickel doped samples were 42.76 nm and 59.41 nm
respectively. The functional groups of the samples were identified by Fourier transform infrared spectroscopy
(FT-IR).The UV-Vis diffuse reflectance spectra (DRS) revealed that the absorption maximum decreases with the
particle size and band gaps were calculated using the formula Eg = hc/λ eV and are 3.67 eV, 4.13 eV and 4.46
eV respectively for non-doped and Ni doped SrTiO3 nanoparticles. Microstructures (surface morphology) were
characterized using scanning electron microscopy (SEM).