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Journal of Structural Chemistry

2009 year, number 3

X-RAY PHOTOELECTRON SPECTROSCOPIC STUDIES OF THE CHARGED STATE OF 3d METAL IONS IN CuCr1-xVxS2 (x = 0-0.4)

L. N. Mazalov, V. V. Sokolov, N. A. Kryuchkova, E. I. Vovk, I. Y. Filatova, G. M. Abramova
Keywords: cation-substituted disulfides, X-ray photoelectron spectroscopy, Auger spectroscopy
Pages: 461-467

Abstract

The charged state of the 3d metal ions in layered cation-substituted disulfides CuCr1-xVxS2 was studied by X-ray photoelectron spectroscopy. An analysis of the energy positions and structure of the Cu2p3/2 and Cr2p3/2 X-ray photoelectron lines showed that the corresponding polycrystalline samples of CuCr1-xVxS2 contained mixed-valence chromium and copper ions. It was shown that the charged states of chromium and copper ions depended on the concentration of vanadium cations (x). The presence of mixed-valence Cu1+ and Cu2+ ions in CuCr1-xVxS2 may be correlated with the crystal structure of the corresponding layered disulfides.