ON CORRELATION BETWEEN THE SHAPE OF RAMAN-SPECTRA AND SHORT-RANGE ORDER STRUCTURE OF HYDROGEN-FREE AMORPHOUS-CARBON FILMS

Citation
Av. Stanishevsky et al., ON CORRELATION BETWEEN THE SHAPE OF RAMAN-SPECTRA AND SHORT-RANGE ORDER STRUCTURE OF HYDROGEN-FREE AMORPHOUS-CARBON FILMS, DIAMOND AND RELATED MATERIALS, 6(8), 1997, pp. 1026-1030
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science
ISSN journal
0925-9635
Volume
6
Issue
8
Year of publication
1997
Pages
1026 - 1030
Database
ISI
SICI code
0925-9635(1997)6:8<1026:OCBTSO>2.0.ZU;2-4
Abstract
Hydrogen-free, hard carbon films prepared by a pulsed cathodic are dis charge method under different deposition conditions were investigated using Raman spectroscopy. The influence of a number of deposition para meters (discharge voltage, temperature and orientation of the substrat e, admixtures, etc.) on the shape of the Raman spectra is considered. The maximum of the Raman intensity ratio R = I-500/I-1550 and the mini mum of the slope S=(I-1300-I-1100)/I-1100 are demonstrated to correspo nd to the highest diamond-like properties of the films. The numerical correlation of R and S with the sp(3)/sp(3) ratio is established. The presented results show that the spectral parameters R and S are suitab le for quantitatively characterizing films with an sp3/sp2 ratio large r than 0.3. (C) 1997 Elsevier Science S.A.