Dear all, The data collection conditions is: hand grind (35 microns), scan: 2Theta/Theta Coupled, to steps 2 sec., target Cu, graphite monochromator, side loading. The correction of preferential orientation has been refined by March-Dollase model.
Thanks a lot, Mario. Dear Mario, > > Please tell me a little about the data collection conditions you used for > this work:- > > How was the sample prepared (hand ground, micronised in McCrone mill ????) > What was the tube target Cu, Co, other ?? > > Cheers > Ian Madsen > ________________________________________ > From: [EMAIL PROTECTED] [EMAIL PROTECTED] > Sent: Tuesday, October 28, 2008 2:48 AM > To: Rietveld_l@ill.fr > Subject: Quantitative analysis > > Dear all, > > I have this question, > > I have been refined one mixture (of well-know percentage composition) of > CaCO3, CaF2, SiO2 and Al2O3, with preferential orientation in CaCO3 (104) > and CaF2 (111) with good results. When I add to the mixture FeCO3 and I > refine with preferential orientation (104), it happens that when I don´t > apply the preferential orientation in all this phases, I have correct > values of percentage composition, but when I apply the preferential > orientation the refinement is good but with incorrect values of percentage > composition. This experiment has been taken in Bragg Brentano geometry. > How I should refine this mixture? > > Thanks a lot by your help. > > Mario Macías > Universidad Industrial de Santander > Colombia > >
