Dear rietvelds
I have some samples, all with the same two phases: alumina and crocoite
(PbCrO4) (electrochemical bath). I use Cobalt radiation. Indexing, I use
always the same two ICDD files, 74-0323 for alumina and 73-1332 for
crocoite. I use software High score plus. Can i use the semiquantif
Prezado Nelson,
You can find CIF files for both alumina and crocoite phases at the
Crystallography Open Database (www.crystallography.net) looking for
chemical elements.
An excellent set of educational material on Rietveld refinement using
GSAS+EXPGUI at the APS-11BM site (
http://www.aps.anl.gov
Dear Nelson,
You can also often find structures of interest in the American
Mineralogist Crystal Structure database
(http://rruff.geo.arizona.edu/AMS/amcsd.php). Both of your phases are
listed numerous times in this data base, and you can download cif files.
The database is freely available.
