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Raman Signature of Bonding and Disorder in Carbons

Published online by Cambridge University Press:  10 February 2011

A C Ferrari  and
J Robertson
A C Ferrari
Affiliation:
Engineering Dept, Cambridge University, Cambridge CB2 1PZ, UK
J Robertson
Affiliation:
Engineering Dept, Cambridge University, Cambridge CB2 1PZ, UK
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Abstract

The factors controlling the position and intensity of the G3 and D peaks of the Raman spectra of disordered and amorphous carbons are separated in terms of a 3-stage model. The Raman spectra are shown to depend fundamentally on the degree of ordering of the sp2 sites, and only weakly or indirectly on the fraction of sp3 sites. Three factors control the G and D peaks; the perfection of graphitic order, replacing aromatic rings with olefinic chains and increasing the sp2 content. These rules allow us to state when the G3 peak position can be related reliably to sp3 content.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 593: Symposium U – Amorphous & Nanostructured Carbon , 1999 , 299
Copyright
Copyright © Materials Research Society 2000

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References

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