Binary and ternary alkali graphite intercalation compounds: in-situ x-ray study of elastic and electrostatic effects on staging

Journal Article · Sat Jan 01 04:00:00 EST 1983 · Mater. Res. Soc. Symp. Proc.; (United States)

OSTI ID:6064921

Misenheimer, M E; Chow, P; Zabel, H

Stage transformations of binary potassium-graphite intercalation compounds have been studied by in-situ x-ray (00l) scans. In the transition region of stages one and two, both stages coexist and all Bragg reflections exhibit resolution limited widths. The characteristics of the stage transformation are identical in intercalated HOPG (a material obtained from Union Carbide with an initial c-axis mosaic spread of 0.6-0.7/sup 0/) and single crystals. This implies that the stage transformation is a direct process with no need of forming intermediate structures, favoring electrostatic interaction as the dominant stabilizer for pure stage donor compounds. The elastic distortion due to potassium atoms substitutionally dissolved in rubidium intercalant layers has also been studied. From the interlayer spacing variation, a double force tensor P/sub zz/ = 0.36 eV was found for potasssium defects in RbC/sub 8/ in the small defect concentration region.

• Research Organization: Univ. of Illinois, Urbana-Champaign
• DOE Contract Number: AC02-76ER01198
• OSTI ID: 6064921
• Journal Information: Mater. Res. Soc. Symp. Proc.; (United States), Journal Name: Mater. Res. Soc. Symp. Proc.; (United States) Vol. 20; ISSN MRSPD
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
CARBON
CLATHRATES
COHERENT SCATTERING
DATA
DIFFRACTION
ELEMENTAL MINERALS
ELEMENTS
EXPERIMENTAL DATA
GRAPHITE
INFORMATION
MINERALS
NONMETALS
NUMERICAL DATA
PHASE TRANSFORMATIONS
RUBIDIUM COMPOUNDS
SCATTERING
X-RAY DIFFRACTION