Effect of in-plane density on the structural and elastic properties of graphite intercalation compounds

Journal Article · Mon Jan 17 00:00:00 EST 1983 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.50.182· OSTI ID:6315644

Woo, K C; Kamitakahara, W A; DiVincenzo, D P; Robinson, D S; Mertwoy, H; Milliken, J W; Fischer, J E

Dramatic differences in structure, elastic properties, and order-disorder temperatures are observed for stage-2 Li-graphite of different in-plane density, indicating the importance of long-range interactions in cohesive properties. LiC/sub 12/ is three-dimensionally ordered up to approx.500 K with ..sqrt..3 x ..sqrt..3 Li superlattice and AA graphite stacking, whereas LiC/sub 18/ is disordered at 300 K and has AB staking. LO and LA (00l) phonon energies are 30% greater in the former, which can be understood in terms of electrostatic effects.

• Research Organization: Moore School of Electrical Engineering and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104
• DOE Contract Number: W-7405-ENG-82; W-7405-ENG-26
• OSTI ID: 6315644
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 50:3
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
LITHIUM CARBIDES
CRITICAL TEMPERATURE
CRYSTAL STRUCTURE
ELASTICITY
PHONONS
CLATHRATES
COMPRESSIBILITY
DISPERSION RELATIONS
EXPERIMENTAL DATA
INTERACTION RANGE
ORDER-DISORDER TRANSFORMATIONS
ALKALI METAL COMPOUNDS
CARBIDES
CARBON COMPOUNDS
DATA
DISTANCE
INFORMATION
LITHIUM COMPOUNDS
MECHANICAL PROPERTIES
NUMERICAL DATA
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
QUASI PARTICLES
TENSILE PROPERTIES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies
360204 - Ceramics
Cermets
& Refractories- Physical Properties