Keywords

Raman spectrum, amorphous carbon, low-frequency feature, degree of disorder

Abstract

In the first-order Raman spectrum of amorphous carbon (a-C) there is a low-frequency feature in the 200-900-cm-1 region. This feature is characteristic of the highly disordered amorphous-carbon materials. We note that the intensity of this feature is very sensitive to the thermal history of samples, thus suggesting that it is an important measure of the degree of disorder of the a-C materials. We also discuss the relationship between this feature and the phonon density of states of graphite.

Original Publication Citation

Qi Wang, D.D. Allred, and Jesus González-Hernández, "The Low Frequency Feature in First Order Raman Spectrum of Amorphous Carbon," Physical Review B. 47(1), 6119-6121 (1993). [http://link.aps.org/doi/1.113/PhysRevB.47.6119][1.113/PhysRevB.47.6119].