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X-ray emission bands (Si K, Si L, Nb Lβ2) and XPS spectra of amorphous a-Nb1-xSix (x=0.20, 0.80), cryst. silicon, a-Si and NbSi2 were combined to identify the origin of al1 their spectral features. The results show that the strength of Si3p-Nb4d mixing is stable and the p-d states account for the bond in the Nb-Si alloys. The Si-Nb bonds seem to be similar in Nb1-x Six and NbSi2 and invariable within a wide range of x.
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Zahorowski et al. (1987) studied this question.
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