Raman Spectroscopy of pure and (Nb+In) co-doped TiO2 single crystals

Abstract

This research project focused on the study of pure TiO2 rutile crystals and rutile crystals that were 2% co doped with Niobium and Indium TiO2 (2-NITO). There has been a growing interest in co-doped TiO2 due to recent papers published on its “colossal permittivity” in the lower frequency range of 10^2 to 10^6 Hz. The goal of this study was to analyze the impact of co-doping on the Raman modes by using Raman spectroscopy. To determine the Raman shift and Half width at half max from the raman data, the Lorentz fit analysis was applied.