| Numéro |
J. Phys. Colloques
Volume 42, Numéro C6, Décembre 1981
International Conference on Phonon Physics
|
|
|---|---|---|
| Page(s) | C6-289 - C6-291 | |
| DOI | https://doi.org/10.1051/jphyscol:1981683 | |
International Conference on Phonon Physics
J. Phys. Colloques 42 (1981) C6-289-C6-291
DOI: 10.1051/jphyscol:1981683
Loomis Laboratory of Physics and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL. 61801, U.S.A.
J. Phys. Colloques 42 (1981) C6-289-C6-291
DOI: 10.1051/jphyscol:1981683
PHONONS IN ALKALI GRAPHITE INTERCALATION COMPOUNDS
H. Zabel et A. MagerlLoomis Laboratory of Physics and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL. 61801, U.S.A.
Abstract
Institut Laue-Langevin, 156X, F-38042 Grenoble-Cedex, France
Abstract
The [001]L phonon branches of alkali-graphite intercalation compounds CxM (x=8,24,36 ; M=K, Rb, Cs) have been measured by means of inelastic neutron scattering experiments. In all cases the phonon branches show zone folding effects , due to the enlarged unit cell as compared to pristine graphite, along with opening of frequency gaps at the center and boundary of the Brillouin zone. All measured [001]L phonon dispersions are describable by one-dimensional shell models with different masses and force constants to account for the graphite and alkali area-mass densities along the c-axis and their interplanar interactions.