V. Esteve et al., Quantitative phase analysis of mixtures of three components using Rietveldand Rius standardless methods. Comparative results, CRYST RES T, 35(10), 2000, pp. 1183-1192
Eight samples, supplied by the Commission on Powder Diffraction of the Inte
rnational Union of Crystallography, through the Round Robin on quantitative
phase analysis, were analized using standardless methods. Samples were mix
tures of corundum, zincite and fluorite in different ratios. The Rietveld m
ethod, using the DBW 3.2 and FULLPROF software, and the Rius method, using
MENGE-PC software, were used. Results obtained agree well with the real com
position supplied (a posteriori) by the IUCr.