Surface-enhanced Raman scattering has been used to study the surface o
f magnetron sputtered amorphous silicon-carbon alloys applying the sil
ver overlayer method. The presence of clusters from the sputtered mate
rial and different types of carbon-carbon bond configurations has been
detected on the film surface. It has been shown that structural trans
formations which are not related to the hydrogen in the plasma take pl
ace on the surface.