An in-plane-type total reflection x-ray diffractometer was newly constructed, and the epitaxial growth of paraffin molecules (n-C 33H68) vacuum-evaporated onto a KCl (001) surface was investigated. The molecular chains in as-evaporated films were shown to arrange themselves parallel to the 〈110〉 direction of the KCl substrate. After the evaporation, moreover, some molecules were revealed to reorient and tend to deviate their c axis by about ±5°from the 〈110〉 direction of the KCl crystal, probably because of the lattice mismatchings between the paraffin and substrate crystals.
ASJC Scopus subject areas
- Physics and Astronomy(all)