Dear Deviadas, Mybe your problem is due to anomalous scattering of Ba that is quite high at the CuK edge (f'=-1.05 f''=8.459). Regards Davide
-----Messaggio originale----- Da: Devidas Gulwade [mailto:[EMAIL PROTECTED] Inviato: mercoled� 20 aprile 2005 6.51 A: [email protected] Oggetto: about experimental conditions Dear friends I was trying to refine pure and doped BaTiO3 structure(P4mm). I have found that there are limitations due to difference in scattering power of different ions and due to less scattering by Oxygen. But in literature there are many papers, who were able to refine Ti shift, that I could not do in my study. Please help me to understand what could be the reason? We have Philip's Expert and using fixed or Auto divergence slit with 0.01/10s. scan speed. Also, I am doing HTXRD, where I want to see the exact weight% of cubic and tetragonal phase. But I could not do it with success, could not get faithful global minima. Please help me in this regards. Waiting for your inputs. With regards Devidas
