Dear Rietveld Experts and Colleagues,
For most of the rietveld  refinements (both qualitative and quantitative_Launch 
.INP mode) of XRD powder data,I often use Topas Academic Macro Library, well 
manged and maintained by John Evans and 
colleagues.https://community.dur.ac.uk/john.evans/topas_academic/topas_macros.htm
But currently for samples, that encounter preferred orientation (e.g. nanotubes 
etc), the strong preferred orientation somehow influence the intensity 
distribution within a profile and hamper structural solution efforts using 
rietveld refinement of powder data.Are there  any macros (written by experts)  
that can assist in such a case.I already tried the " Stephens peak shape 
broadening macro" but found no change in Rwp value.Also,  If there is complete 
data bank of such macro..s. Please share. Accept my apologies for being 
ignorant, so far.
Best regards,
Naveed_________________Dr. Naveed Zafar 
Alihttps://scholar.google.com/citations?sortby=pubdate&hl=en&user=V4Hsus8AAAAJ&view_op=list_works
"Being ignorant is not so much a shame, as being unwilling to learn." .....― 
Benjamin Franklin

                                          
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