Abstract
The growth process of multilayer methane on graphite was studied by a.c. heat-capacity technique in the temperature range 4-40 K. The heat-capacity anomalies related to orientational-ordering transitions show gradual change with increasing coverage towards bulk-like behaviour. This result is consistent with the conclusion that methane grows layer by layer on graphite surface for temperatures > 20 K. Another heat-capacity anomaly, unrelated to orientational-ordering transitions, was observed near 11 K for methane film with coverages higher than two layers. We suggest this anomaly is probably related to a structural transition in the multilayer film, possibly due to a wetting transition.
Original language | English (US) |
---|---|
Pages (from-to) | 1647-1656 |
Number of pages | 10 |
Journal | Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics |
Volume | 82 |
Issue number | 10 |
DOIs | |
State | Published - 1986 |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry