Synthesis and the Crystal Structure of CeCuS2.

Abstract Single phase of CeCuS 2 has been prepared by the mixture of CeO 2 and Cu 2 S at 1000  ° C in CS 2 /Ar atmosphere. All X-ray diffraction peaks of CeCuS 2 are indexed on the basis of the monoclinic system (space group: P 2 1 / c ) the same as LaCuS 2 and NdCuS 2 . The lattice parameters obtained by Rietveld analysis are a = 0.6573 ( 1 ) nm, b = 0.7256 ( 1 ) nm, c = 0.6875 ( 1 ) nm, and β = 98.566 ( 1 ) ° .