XRD analysis of undoped and Fe doped TiO2 nanoparticles by Williamson Hall Method

Abstract

Undoped and Fe doped titanium dioxide (TiO2) nanoparticles were synthesized by sol-gel method at room temperature. The synthesized samples were annealed at 500oC. For structural analysis, the prepared samples were characterized by X-ray diffraction (XRD). The crystallite size of TiO2 and Fe doped TiO2 nanoparticles were calculated by Scherer’s formula, and was found to be 15 nm and 11 nm, respectively. Reduction in crystallite size of TiO2 with Fe doping was observed. The anatase phase of Fe-doped TiO2 nanoparticles was also confirmed by X-ray diffraction. By using Williamson-Hall method, lattice strain and crystallite size were also calculated. Williamson–Hall plot indicates the presence of compressive strain for TiO2 and tensile strain for Fe-TiO2 nanoparticles annealed at 500oC.