Abstract
Using 514 nm radiation and a careful experimental protocol allowing us to make quantitative intensity analyses, we have examined the first- and second-order Raman spectra of five varieties of graphite. These include single-crystal graphite and highly oriented pyrolytic graphite as references, then two with a significant content of c-axis translation faults introduced through grinding and exfoliation, and a last sample which is purely turbostratic. We show that full c-axis stacking disorder results in a strong increase of the scattered E2g-mode intensity. We have further shown that even in those strongly disordered stacking sequences, but in which the AB sequence persists over only a few layers, the doublet around 2700 cm−1 is resolved. We argue against assigning the peak around 1355 cm−1 to “disorder,” as is so often done, but to the finite in-plane domain size as proposed a number of years ago; moreover, we suggest that this peak is a more sensitive probe of such small domains than is x-ray diffraction.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 8:33 a.m.) |
Deposited | 2 years, 1 month ago (July 11, 2023, 1:37 a.m.) |
Indexed | 2 months, 1 week ago (June 24, 2025, 7:43 a.m.) |
Issued | 26 years, 8 months ago (Dec. 15, 1998) |
Published | 26 years, 8 months ago (Dec. 15, 1998) |
Published Print | 26 years, 8 months ago (Dec. 15, 1998) |
@article{Wilhelm_1998, title={Raman spectroscopic studies on well-defined carbonaceous materials of strong two-dimensional character}, volume={84}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.369027}, DOI={10.1063/1.369027}, number={12}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Wilhelm, H. and Lelaurain, M. and McRae, E. and Humbert, B.}, year={1998}, month=dec, pages={6552–6558} }