Preparation and crystal structures of some AIVB2IIO4 compounds: Powder X-ray diffraction and rietveld analysis

Abstract

The AIVB2IIO4 compounds such as cadmium tin oxide (Cd2SnO4 or CTO) and zinc tin oxide (Zn2SnO4 or ZTO) are synthesized by solid state reaction of the subsequent binary oxides. The synthesized powders were analyzed through the powder X-ray diffraction (PXRD). Cell search done on the PXRD patterns shows that the Cd2SnO4 crystallizes in orthorhombic structure with space group Pbam and the cell parameters as a=5.568(2) Å, b=9.894(3) Å, and c=3.193(1) Å and the Zn2SnO4 crystallizes as cubic with the space group Fd3̄m and with the cell parameter a=8.660(2) Å. Rietveld refinement was done on the PXRD patterns to get the crystal structure of the Cd2SnO4 and Zn 2SnO4 and to define the site deficiency of atoms which causes the electrical properties of the materials. © 2014 K. Jeyadheepan and C. Sanjeeviraja.