Discussions | top

• Database : Structure Determination from Powder Diffraction
  Hypertext compendium of more than 200 publications about ab initio structure determination from powder diffraction data. Methods and softwares are listed and briefly described, statistics are given. - A. Lebail.

• Low FWHM and RP Discussion
  Some comments made during the search for a commercially available conventional X-ray powder diffractometer which would provide simultaneously a good resolution (low Full Width at Half Maximum) and whole pattern profile shapes well fittable by Rietveld softwares (low reliability R on profile - calculated after background subtraction) - A. Lebail.

• Calculated Rietveld patterns and the ICDD
  Summary of a discussion on the Rietveld Mailing list, about relations Rietveld-ICDD and more. In my opinion, the most important remark has been from Camden Hubbard (ORNL): "To me it is truly disappointing that Rietveld and simulated patterns are not beeing saved in PDF with full detail for use by ICDD customers. Clearly, a disgrace for the ICDD that this has lingered on for over a decade since a number of us recognized and proposed the need.". I fully agree with that point of view. Now do ICDD will change its policy ? Wait and see. - A. Lebail.

Frequently Asked Questions | top

• List of PC (and Mac) Rietveld Programs and Related Powder Diffraction Software including :-
  (Compiled by L. Cranswick)
  • Separate Rietveld Difference Plot Viewers
  • Rietveld Friendly Structure Viewing Software
  • Rietveld Friendly Bond Length and Angle Calculation Software
  • User Friendly Powder XRD Data Inter-Conversion Software
  • User Friendly Peak Find and Peak Profiling Software
  • User Friendly Unit Cell Refinement Software