Dear All, I have obtained some X-ray data of YBa2Cu3O7-y compounds, and since I was suggested conventional X-ray is not ideal to study the oxygen atom arrangement in this compound, whilst I did observe this effect when goes to rietveld refinement, in which the refinement seems to be reluctant to give oxygen occupying information, leading ambiguities, ie., indistinguisahble as within systematic errors in studying profile evolution due to oxygen change.
However, provided the limited high-resolution neutron beamtime, I am wondering if synchrotron powder diffraction can give sensible alternative between conventional x-ray and high-resolution neutron diffraction, since synchrotron is much more intense than conventional and therefore relatively weak scatter as oxygen in YBCO will give detectable information, without worrying about the systematic errors? Could some of you kindl shed some light on this for me? Many thanks to all, Ling Fei ***************************************** Neutron Scattering Research Group Institute for Materials Research Joule Physics Laboratory University of Salford Salford, M5 4WT United Kingdom Tel:0161 295 3269 Email:[EMAIL PROTECTED] *****************************************
