A XPS study of Fe1-χCuχCr2S4 |
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| Authors: | K Ando |
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| Institution: | Electrotechnical Laboratory, Umezono, Sakura, Niihari, Ibakari 305, Japan |
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| Abstract: | The X-ray photoelectron spectroscopy is applied for a chalcogen chromite system Fe1 ? xCuxCr2S4 to obtain microscopic information about valence states of the constituting atoms. The features of the Cu 2p spectra show that copper is always in a monovalent state in this system. This supports a model Fe3+1 ? xCu1+xCr3+2S1-2x ? 1S2-5 ? 2x for a compositional range 0.5 < x < 1. |
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