> > That means after identifying impurity phases, we should keep cell > parameters and and all shape parameters fixed for impurity phases in > Rietveld refinement and refine only scale factor of these phases along with > main phase and then refine all cell parameters and and all shape parameters > for the main phase? >
Yes. Then you can refine the cell parameters and scale factors for the impurity phases. Be careful not to include too many peak shape parameters - start by constraining them to be the same for all phases. ______________________________________________ * Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE * <alan.he...@neutronoptics.com> +33.476.98.41.68 http://www.NeutronOptics.com/hewat ______________________________________________
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