scholarly journals Raman spectroscopy on amorphous carbon films

1996 ◽  
Vol 80 (1) ◽  
pp. 440-447 ◽  
Author(s):  
J. Schwan ◽  
S. Ulrich ◽  
V. Batori ◽  
H. Ehrhardt ◽  
S. R. P. Silva
Keyword(s):  
Raman Spectroscopy ◽  
Amorphous Carbon ◽  
Carbon Films ◽  
Amorphous Carbon Films

Quantitative Studies of Tetrahedral Bonding in Amorphous Carbon Films Using Ultraviolet Raman Spectroscopy

1997 ◽  
Vol 498 ◽  
Author(s):  
K. W. R. Gilkes ◽  
S. Prawer ◽  
J. Robertson ◽  
H. S. Sands
Keyword(s):  
Raman Spectroscopy ◽  
Amorphous Carbon ◽  
Random Network ◽  
Carbon Films ◽  
Strongly Correlated ◽  
Amorphous Carbon Films ◽  
Quantitative Studies ◽  
Tetrahedral Bonding ◽  
Two Peaks ◽  
Non Destructive

ABSTRACTThe bonding in a series of unhydrogenated amorphous carbon films has been analysed quantitatively using Raman spectroscopy with ultraviolet excitation. The Raman spectra exhibit two broad Raman peaks at 1650 cm−1 and 1100 cm−1, due to sp2 and sp3 vibrational modes respectively. The former is a resonance feature associated with a large proportion of paired sp2 sites, while the latter is a weighted vibrational density-of-states for the distorted random network of sp3 sites. The position and relative intensity of the two peaks are shown to be strongly correlated with the percentage of sp3 sites in the films, providing a reliable measure of sp3 bonding which is both quantitative and non-destructive.

Raman spectroscopy and mechanical properties of multilayer tetrahedral amorphous carbon films

2011 ◽  
Vol 519 (15) ◽  
pp. 4906-4909 ◽  
Author(s):  
Sai Wang ◽  
Jiaqi Zhu ◽  
Jiazhi Wang ◽  
Xunbo Yin ◽  
Xiao Han
Keyword(s):  
Mechanical Properties ◽  
Raman Spectroscopy ◽  
Amorphous Carbon ◽  
Carbon Films ◽  
Amorphous Carbon Films ◽  
Tetrahedral Amorphous Carbon

Raman Spectroscopy of Amorphous Carbon Films Modified by Single-Pulse Irradiation of Nanosecond and Femtosecond Lasers

2017 ◽  
Vol 255 (1) ◽  
pp. 1700225 ◽  
Author(s):  
Natalia R. Arutyunyan ◽  
Maxim S. Komlenok ◽  
Evgeny V. Zavedeev ◽  
Sergei M. Pimenov
Keyword(s):  
Raman Spectroscopy ◽  
Amorphous Carbon ◽  
Femtosecond Lasers ◽  
Single Pulse ◽  
Carbon Films ◽  
Pulse Irradiation ◽  
Amorphous Carbon Films

Plasma deposition of amorphous carbon films from methane atmospheres highly diluted in argon

2001 ◽  
Vol 697 ◽  
Author(s):  
L. G. Jacobsohn ◽  
F. L. Freire
Keyword(s):  
Mechanical Properties ◽  
Raman Spectroscopy ◽  
Amorphous Carbon ◽  
Plasma Deposition ◽  
Carbon Films ◽  
X Ray Diffraction ◽  
Amorphous Carbon Films ◽  
X Ray ◽  
Partial Pressures ◽  
Amorphous Character

AbstractWe investigated the deposition, structure and mechanical properties of a-C:H films grown in Ar-CH4 mixtures with the Ar partial pressure ranging from 0 to 99 %. The deposition rate strongly decreased with progressive Ar dilution of the CH4 atmosphere. Films deposited in pure CH4 atmospheres have a hydrogen content of 20 at.% that showed a trend to decrease for lower CH4 partial pressures, while the density remained nearly constant at around 1.4x1023 at./cm3. Raman spectroscopy and x-ray diffraction revealed the amorphous character of the films. The compressive internal stress remained constant around 2.5 GPa and the hardness decreases for Ar rich precursor atmospheres.

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