Hello!

I have a question about the rigth parameter of breadth to use in the 
Scherrer formula: should I use the FWHM or integral breadth value? Because I 
have read that in the case of whole pattern fitting metodology for extract 
size and strain is used the integral breadth, but in te case of Rietveld 
method software for the same purpose is used the FWHM, and the results are 
different.

Thanks in advance!

Miguel Hesiquio
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