TITLE

Instability of hydrogenated amorphous carbon films towards defect creation at high disorder

AUTHOR(S)
Lejeune, M.; Bouzerar, R.; Benlahsen, M.; Durand-Drouhin, O.; Zeinert, A.
PUB. DATE
November 2001
SOURCE
Applied Physics Letters;11/19/2001, Vol. 79 Issue 21, p3443
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report a complete characterization of hydrogenated amorphous carbon (a-C:H) thin films through Raman spectroscopy, photothermal deflection spectroscopy, and mechanical studies. The interpretation of the optical absorption data within the Dasgupta’s model offers an estimate of the disorder intensity through a characteristic energy scale of the model. The vibrational data (Raman spectra) and the stress data together with the optical absorption data give strong evidence for a sharp transition between a low disorder state dominated by aromatic rings and a strong disorder state likely in keeping with the creation of some topological defects, such as odd rings. © 2001 American Institute of Physics.
ACCESSION #
5549561

 

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