Rotational transitions in monolayer molecular solids
- 1 March 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 31 (5) , 3048-3050
- https://doi.org/10.1103/physrevb.31.3048
Abstract
We have measured the NMR spin-lattice relaxation time and second moment for ethylene and methane monolayers adsorbed on a graphite substrate. Coverages were in the low-density-solid region. Substantial rotational mobility (apparently isotropic) is found for both systems at temperatures below the freezing transition. Some or all of this mobility is lost in a second, rotational transition for ethylene at about 35 K and for methane at about 17 K.Keywords
This publication has 18 references indexed in Scilit:
- Nuclear-magnetic-resonance study of methane adsorbed on graphitePhysical Review B, 1984
- NMR Study of the Orientational Ordering of Monolayers ofon GraphitePhysical Review Letters, 1983
- Studies of the Orientational Ordering Transition in Nitrogen Adsorbed on GraphitePhysical Review Letters, 1983
- The melting line for ethylene on graphiteSurface Science, 1983
- A LEED study of ethane films adsorbed on graphite in the monolayer rangeSurface Science, 1983
- Structure and orientational ordering of nitrogen molecules physisorbed on graphiteSurface Science, 1983
- Dynamics of Methane Monolayers Adsorbed on GraphitePhysical Review Letters, 1982
- Neutron Scattering as a Probe of the Orientational Ordering of Nitrogen Molecules on GraphitePhysical Review Letters, 1979
- N2 Monolayers on graphite: Specific heat and vapor pressure measurements — thermodynamics of size effects and steric factorsSurface Science, 1977
- Structural Investigations by Means of Nuclear Magnetism. II. Hindered Rotation in SolidsThe Journal of Chemical Physics, 1950