Dear Rietvelders,
I'm currently doing Rietveld refinements (with FullProf) for a
multiphase sample whose 3 phases with space groups Fm3m, P63/m and
I41a/md. The problem is the reflections of these 3 phases are very
superposed and hence I have found that their (U,V,W) refined parameters
seem to be very correlated.
I have read somewhere that for each phase we should begin refine W, then
V and finally U. But I don't know in my case whose 3 phases having their
own (U, V, W) we should follow which sequence ? First refine (U, V, W)
of the strongest phase and then for others phases? Or should we refine
simultaneously W for all phases and then V and U for all phases?
Do anyone of you have any experience on this case ?
Thank you in advance for your kindly helps.
Best regards,
---
Huy LE-QUOC,
Doctorant
LPSC/CNRS - Centre de Recherche Plasmas-Matériaux-Nanostructures
et Institut Néel/CNRS
53 rue des Martyrs, Grenoble 38026, FRANCE
