Multilayer argon films on graphite: Structural and melting properties

Journal Article · Thu Jul 01 04:00:00 EDT 1993 · Accounts of Chemical Research; (United States)

DOI:https://doi.org/10.1021/ar00031a001· OSTI ID:5650238

Larese, J Z ^[1]

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1. Brookhaven National Lab., Upton, NY (United States)

The authors chose to study argon multilayer growth on graphite for several reasons. First, the [sup 36]Ar isotope is an excellent neutron scatterer, possessing one of the largest coherent neutron scattering cross sections of any element. Second, the argon-argon and the argon-graphite potentials are well-known, thus making the system an ideal candidate for both first principles theoretical and computer modeling. Third, graphite is, in some sense, an ideal substrate material: it presents (almost exclusively) a single adsorption surface, the basal plane; it is easily cleaned and prepared; and it is readily available in an exfoliated form with a high surface-to-volume ratio (necessary because of the small scattering cross sections of neutrons). Finally, whereas many of the physical properties of monolayer argon films on graphite have been thoroughly investigated, the melting properties are still not fully understood. Multilayer molecular films on graphite and MgO substrates have also been extensively investigated with neutrons. In addition to the layering and melting properties that are described in this paper, molecular films exhibit additional physical properties which can be related to the structures of the molecules. 53 refs., 12 refs.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5650238
• Journal Information: Accounts of Chemical Research; (United States), Journal Name: Accounts of Chemical Research; (United States) Vol. 26:7; ISSN 0001-4842; ISSN ACHRE4
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADSORPTION
ARGON
ARGON 36
ARGON ISOTOPES
CARBON
COHERENT SCATTERING
DIFFRACTION
ELEMENTAL MINERALS
ELEMENTS
EVEN-EVEN NUCLEI
FILMS
FLUIDS
GASES
GRAPHITE
GROWTH
ISOTOPES
LIGHT NUCLEI
MELTING
MINERALS
MOLECULAR STRUCTURE
NEUTRON DIFFRACTION
NONMETALS
NUCLEI
PHASE TRANSFORMATIONS
RARE GASES
SCATTERING
SORPTION
SORPTIVE PROPERTIES
STABLE ISOTOPES
SURFACE PROPERTIES