The Effect of the Substrate on the Epitaxial Growth of the Hexatriacontane Crystal

The epitaxial crystallization of hexatriacontane vacuum-evaporated onto a gold-covered KCl (001) surface was investigated as a function of the gold coverage. The hexatriacontane film on the KCl surface was composed of rod-like crystals taking the orientation of (110)H//(001)KCl and [001]H//[110]KCl. The film on evaporated gold film was composed of lamellar crystals taking the orientation of (001)H parallel to the substrate and a random orientation in the azimuthal direction. The hexatriacontane film evaporated on the substrate which was partly covered with gold particles was composed of both rod-like and lamellar crystals. When the coverage ratio of the gold particles was low, the lamellar crystals in the hexatriacontane film took the orientation of (001)H//(001)KCl and [110]H//[110]KCl. The numbers of lamellar crystals increased, and their orientation in the azimuth became more random, with and increase in the gold coverage.