Combined extended x-ray-absorption fine structure and diffraction study of Kr adsorbed on graphite

Journal Article · Tue Mar 01 00:00:00 EST 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.37.3461· OSTI ID:5355278

Guryan, C A; Lee, K B; Stephens, P W; Goldman, A I; Larese, J Z; Heiney, P A; Fontes, E

We report the results of a combined extended x-ray-absorption fine structure (EXAFS) and x-ray diffraction study of Kr adsorbed on a ZYX graphite substrate. The data are consistent with simple models for atomic fluctuations, which are found to be surprisingly large. Thermal fluctuations weaken the Kr-Kr EXAFS signal, so that the average number of Kr neighbors and the EXAFS Debye-Waller factor cannot be determined independently. The disordered phase at the commensurate-incommensurate transition appears to have substantial local order in the Kr-C signal, consistent with the domain-wall description of that phase.

• Research Organization: State University of New York at Stony Brook, Stony Brook, New York 11794-3800
• OSTI ID: 5355278
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 37:7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
GRAPHITE
ABSORPTION SPECTRA
SORPTIVE PROPERTIES
X-RAY SPECTRA
KRYPTON
ADSORPTION
DEBYE-WALLER FACTOR
FINE STRUCTURE
X-RAY DIFFRACTION
CARBON
COHERENT SCATTERING
DIFFRACTION
ELEMENTAL MINERALS
ELEMENTS
FLUIDS
GASES
MINERALS
NONMETALS
RARE GASES
SCATTERING
SORPTION
SPECTRA
SURFACE PROPERTIES
360603* - Materials- Properties