Abstract
The perovskite family includes a variety of titanates used in a variety of electrical ceramic applications such as electronic, electro-optical and electro-mechanical ceramic applications. Barium Titanate (BaTiO3) is a member of a large family of compounds with the general formula ABO3 called perovskites. This paper includes the study of the properties of pristine and Iron (Fe) doped Barium Titante (BTO) at different concentrations synthesized using the sol–gel method. The concentration of dopants varies from 0 to 3 mol% in the specimens. The structural, surface morphology and optical properties of pure and Fe ion doped Barium Titanate nanoparticles have been investigated using X-ray diffraction (XRD), UV–Visible spectroscopy and Photoluminescence spectroscopy. X-ray diffraction (XRD) was used to study the structure and crystallite size of BTO nanoparticles. The results from X-Ray diffractogram shows that the particle size lies in the range 23 to 29 nm. Lattice strain of each samples were calculated using Williamson-Hall plot (WH plot). Bandgap energy of the samples were calculated using UV– Visible spectroscopy. For pristine BaTiO3 the bandgap is found to be 3.23 eV. It is observed that as the doping percentage increases the bandgap of the material decreases. Photoluminescence measurements revealed that the specimen show ultraviolet emission along with emission in blue region.
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