Structure refinement of cadmium cerium(IV) phosphate Cd0.5Ce2(PO4)3

Cadmium cerium orthophosphate Cd0.5Ce2(PO4)(3) is synthesized by precipitation from aqueous solutions. The structure refinement from powder X-ray diffraction data is preceded by the sample preparation and structure solution. The refinement is carried out by the Rietveld method (ADP-2 diffractometer, Cu-K alpha radiation, Ni filter, 15 degrees < 2 theta < 120 degrees, 2 theta-scan step 0.02 degrees, counting time 10 s per step). All calculations are carried out using the WYRIET program (version 3.3) within the sp. gr. P2(1)/n. The structure is refined with anisotropic displacement parameters for cations and isotropic displacement parameters for oxygen atoms. (C) 2005 Pleiades Publishing, Inc.