RE: Problems using TOPAS R (Rietveld refinement)

2007-03-18 Thread Mr. Tony Raftery
Leandro I would suggest that you use an internal standard to get a handle on your sources of uncertainty. I would suggest Baikalox corundum CR1 - while I don't know its non-diffracting content, it is probably low. I would suggest that you use the technique outlined in Pratapa et. al.  Powder Diff

Re: Problems using TOPAS R (Rietveld refinement)

2007-03-18 Thread Leandro Bravo
Mr. Kleeberg, Read the paper that you send to me, ´´RIETVELD ANALYSIS OF DISORDERED LAYER SILICATES``, and I have some questions about it. In the refinement of chlorite minerals with well defined disordering (layers shifting by exactly b/3 along the three pseudohexagonal Y axis), you separat