It is found that the electronic density on Cu and O atoms grows when substituting O atoms by S atoms in the Y2Co2O5-structure.
The X-ray method results of studying of electronic properties of high-Tc superconductiviting metal-oxide is considered. The data on distributing the filled electronic states in valence bands of related compounds, their atomic states, etc are obtained. The veriation of the X-ray emission shapes for 1–2–3 with temperature is also investigated.
Experimental studies have been carried out of the x-ray emission spectra of atoms constituting La2−xSrxCuO4. The relativistic LMTO method is used to calculate the energy band structure, total and partial density of states, and the intensity distribution in the x-ray emission bands for all series of atoms constituting La2−xSrxCuO4. The results of theoretical calculations are found to be in good agreement with the experimental data.
