Quantitative Phase Analysis for Titanium Dioxide From X-Ray Powder Diffraction Data Using The Rietveld Method

Abstract

In this study, we report the quantitative phase analysis which is performed by Rietveld X-ray diffraction using “fullprof”( fullprof.2k,Version 5.00 - Jan2011-ILL JRC) program to four different samples of TiO2 . Titanium dioxide is formed of two phases, Anatase and Rutile with different weight percentage. Four samples under study , first is a nanopowder , second is thin a film ,third is the micropowder while the fourth is formed of 50:50 Anatase and Rutile TiO2 which is considered as standard. Retiveld refinement on X-ray data for the samples is performed . The obtained results have a good optimization between the observed x-ray diffraction pattern and that calculated by Retiveld. This optimization is determined according to Rp, Rwp and GOF . The accuracy check was done by examining the fourth sample by X-ray. Then, quantitative phases were calculated by comparing method which needs pure phases mixture. The final result shows that Retiveld refinement is more accurate than comparing method.