Auger parameter studies of amorphous NbSi

The compositional dependence of the binding energies and Auger parameters on Nb and Si in Nb x Si 1-x , has been measured at high resolution using a Scienta spectrometer. Alloying increases the binding energy of Nb and decreases that of Si by up to 0.6 eV. The Auger parameter of Si increases on alloying, indicating enhanced screening in the amorphous silicide, but that of Nb is exceptionally sensitive to the presence of oxide at the surface.