Raman Spectrum of Graphite
F. TuinstraDivision of Macromolecular Science, Case Western Reserve University, Cleveland, Ohio 44106Jack L. KoenigDivision of Macromolecular Science, Case Western Reserve University, Cleveland, Ohio 44106
1970en
ABI
Abstract
Raman spectra are reported from single crystals of graphite and other graphite materials. Single crystals of graphite show one single line at 1575 cm−1. For the other materials like stress-annealed pyrolitic graphite, commercial graphites, activated charcoal, lampblack, and vitreous carbon another line is detected at 1355 cm−1. The Raman intensity of this band is inversely proportional to the crystallite size and is caused by a breakdown of the k-selection rule. The intensity of this band allows an estimate of the crystallite size in the surface layer of any carbon sample. Two in-plane force constants are calculated from the frequencies.
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Cited by 70 references