Abstract
Rare earth ion (Ce) doped TiO2 and pure TiO2 nanostructured were prepared by sol gel acid modified technique and calcinated at 450°C. Microstructural studies and thermal analysis were carried by XRD and TGA respectively. The results of structural characterization show the formation of all samples in single phase without any impurity. Optical properties were studied by UV- visible spectroscopy and band gap energy was estimated 3.04 eV and 3.14 eV for pure and Ce doped TiO2 respectively. Room temperature dielectric constant (ε’) decreases abruptly at lower frequencies owing to the charge transport relaxation. The observed behavior of the dielectric properties can be attributed on the basis of Koop’s theory based on Maxwell-Wagner’s two layer model in studied nanoparticles.
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