| PHONONS IN ALKALI GRAPHITE INTERCALATION COMPOUNDS (1981) | |||||||||||||||
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. | |||||||||||||||
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