Phonons in alkali graphite intercalation compounds

Technical Report · Thu Jan 01 04:00:00 EST 1981

OSTI ID:6041782

Zabel, H; Magerl, A

The (001)L phonon branches of alkali-graphite intercalation compounds C/sub x/M (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.

• Research Organization: Illinois Univ., Urbana (USA); Institut Max von Laue - Paul Langevin, 38 - Grenoble (France)
• DOE Contract Number: AC02-76ER01198
• OSTI ID: 6041782
• Report Number(s): DOE/ER/01198-1365; CONF-810872-2; ON: DE82000059
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
656000 -- Condensed Matter Physics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALI METALS
CARBON
CLATHRATES
COHERENT SCATTERING
COUPLING
DATA
DIFFRACTION
ELEMENTS
EXPERIMENTAL DATA
GRAPHITE
INFORMATION
LATTICE VIBRATIONS
MATHEMATICAL MODELS
METALS
NEUTRON DIFFRACTION
NONMETALS
NUCLEAR MODELS
NUMERICAL DATA
ORDER-DISORDER TRANSFORMATIONS
PHASE TRANSFORMATIONS
PHONONS
QUASI PARTICLES
SCATTERING
SHELL MODELS