Abstract

Cadmium cerium orthophosphate Cd{sub 0.5}Ce{sub 2}(PO{sub 4}){sub 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{sub K{alpha}} radiation, Ni filter, 15 deg. < 2{theta} < 120 deg., 2{theta}-scan step 0.02 deg., counting time 10 s per step). All calculations are carried out using the WYRIET program (version 3.3) within the sp. gr. P2{sub 1}/n. The structure is refined with anisotropic displacement parameters for cations and isotropic displacement parameters for oxygen atoms.

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