Infrared active optical vibrations of graphite

R. J. Nemanich; G. Lucovsky; S. A. Solin

doi:10.1016/0038-1098(77)90663-9

Infrared active optical vibrations of graphite

R. J. Nemanich, G. Lucovsky, S. A. Solin

Research output: Contribution to journal › Article › peer-review

241 Scopus citations

Abstract

The infrared refectivity of graphite has been measured for E⊥c and E□c and the frequencies of the "out-of-plane" A_2u symmetry mode and the "in-plane" E_1u symmetry mode have been determined to be 868 cm^-1, respectively. Macroscopic effective charges for each mode have also been calculated, 0.08e for A_2u and 0.41e for E_1u. The assignment of the A_2u frequency has enabled us to evaluate the magnitude of a four-body force that has been used to characterize the graphite lattice modes involving out-of-plane displacements.

Original language	English (US)
Pages (from-to)	117-120
Number of pages	4
Journal	Solid State Communications
Volume	23
Issue number	2
DOIs	https://doi.org/10.1016/0038-1098(77)90663-9
State	Published - Jul 1977
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

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title = "Infrared active optical vibrations of graphite",

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author = "Nemanich, {R. J.} and G. Lucovsky and Solin, {S. A.}",

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AU - Nemanich, R. J.

AU - Lucovsky, G.

AU - Solin, S. A.

PY - 1977/7

Y1 - 1977/7

N2 - The infrared refectivity of graphite has been measured for E⊥c and E□c and the frequencies of the "out-of-plane" A2u symmetry mode and the "in-plane" E1u symmetry mode have been determined to be 868 cm-1, respectively. Macroscopic effective charges for each mode have also been calculated, 0.08e for A2u and 0.41e for E1u. The assignment of the A2u frequency has enabled us to evaluate the magnitude of a four-body force that has been used to characterize the graphite lattice modes involving out-of-plane displacements.

AB - The infrared refectivity of graphite has been measured for E⊥c and E□c and the frequencies of the "out-of-plane" A2u symmetry mode and the "in-plane" E1u symmetry mode have been determined to be 868 cm-1, respectively. Macroscopic effective charges for each mode have also been calculated, 0.08e for A2u and 0.41e for E1u. The assignment of the A2u frequency has enabled us to evaluate the magnitude of a four-body force that has been used to characterize the graphite lattice modes involving out-of-plane displacements.

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JO - Solid State Communications

JF - Solid State Communications

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Infrared active optical vibrations of graphite

Abstract

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