X-ray diffraction analysis of SrTiO3 nanoparticles by Williamson-Hall, size-strain plot and FullProf method

Abstract

Strontium Titanate (SrTiO3) nanoparticles were synthesized using solid state method. Rietveld refinement using FullProf tool of x-ray diffraction data revealed the cubic structure with Pm-3 m space symmetry is present in SrTiO3-NPs. Williamson-Hall analysis with size-strain plot were used to examine the impact of crystallite size and lattice strain on the physical phenomenon of SrTiO3 nanoparticles. Different models like uniform density model (UDM), uniform stress deformation model (USDM), uniform deformation energy density model (UDEDM), and the size-strain plot (SSP) were used to estimate the strain, stress, and energy density parameters using shape profile of the X-ray diffraction peaks. FESEM microscopy is used to investigate the surface morphology as well as the particle size of the crystalline material. The particle size is obtained to be 66 nm.