Bk. Tay et al., RAMAN STUDIES OF TETRAHEDRAL AMORPHOUS-CARBON FILMS DEPOSITED BY FILTERED CATHODIC VACUUM-ARC, Surface & coatings technology, 105(1-2), 1998, pp. 155-158
Raman spectra of tetrahedral amorphous carbon (ta-C) films have been o
btained as a function of impinging carbon ion energy. In order to anal
yze the spectra quantitatively, the Raman spectra were fitted using a
least-squares computer program. The relative Raman intensity is found
to decrease with increasing sp(3)/sp(2) bonding ratio in the films. In
particular, the parameters from the fits show a strong correlation be
tween the relative intensity ratio and the sp(3) fraction. (C) 1998 El
sevier Science S.A.