Mössbauer studies of the CuFeS2-δ–CuInS2 system

Abstract

The interaction in theCuFeS2-δ–CuInS2system by means of Mössbauer studies and X-ray powder diffraction (XRPD) was studied using two series of alloys for δ=0 and δ=0.10 prepared from ternary compounds CuFeS2- δ and CuInS2 by a three stage solid state synthesis. XRPD revealed the absence of complete solubility in the CuFeS2-δ–CuInS2 and showed that the limit of solubility for CuInS2-based alloys is 0.05 molar part and exceeds the limit of solubility for CuFeS2-δ-based alloys (0.03 molar part).Mössbauer spectra of the CuFeS2-δ–CuInS2 alloys in the two-field range for both δ=0 and δ=0.10 can be fitted by two components, a sextet and a doublet, indicating two different positions of iron atoms in the crystal lattice.