The visual inspection of each fitted XRD peak is one of the best way to judge the quality of fit. Improvement of Rietveld fitting is also reflects in the lowering of agreement factors (Rp, Rwp, Rexp, RB, RF & chi2) and difference pattern.
1. I want to know about the increasing or decreasing trend of these agreement factors.
2. What is the range of value of each agreement factor of FullProf program which is considered as optimum?
Thanks in advance for giving the physical interpretation of agreement factors.
Basically the smaller the better ..
For interpretation, please check the manual,
Thanks Dr. Pang. I am interested in knowing whether Rp > Rwp or Rp < Rwp and why? OR there is no such constraint on R factors.
Similarly for RB > or = or < RF?
This paper may be helpful: http://dx.doi.org/10.1154/1.2179804
Dear Dr. Roman Nikolaevich Vasin, this paper is not accessible to me. Could you please send me a copy of this paper?
Regards,
ashok bhakar
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