MГ–SSBAUER SPECTRA OF IRON DOPED CuCrS2
V. A. Varnek, V. V. Sokolov, I. Y. Filatova, S. A. And
Keywords: sulfides, iron, M?ssbauer spectra, phase composition, structure
Pages: 365-368
Abstract
Mössbauer spectroscopy is used to study the state of iron atoms in samples with a composition of
CuCr1-xFexS2 (x = 0.01-0.30). It is shown that at x ≤ 0.02 samples are solid solutions in which iron atoms have an oxidation number of 3+ and replace chromium atoms in octahedral sites. When the iron concentration increases, the second phase - chalcopyrite CuFeS2 - forms along with the solid solution. The relative iron concentration in this phase increases from 11% at x = 0.03 to 52% at x = 0.30.
|
