Kinetic investigations within the transition region from polyhedral to skeletal growth mode (II). Growth kinetics of the edge of the basal face of zinc single crystals under diffusion conditions

✍ Scribed by Dr. D. Iwanov

• Publisher: John Wiley and Sons
• Year: 1990
• Tongue: English
• Weight: 331 KB
• Volume: 25
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.2170250303

✦ Synopsis

The growth kinetics of the edge of the basal face of zinc single crystals grown from a vapour phase under diffusion controlled conditions has been investigated. The growth of the basal edge with time at constant temperature and supersaturation and argon pressures between 5 and 250 Torr or in vacuum 1 x lO-'Torr has been plotted. It is established thalt the length u of the edge of the (OO01) face is changed with time t according to a linear and a parabolic dependence. The kinetic critical size uk is determined by the intersection point between the two parts of a2(t) curves. It is shown that the results from the kinetic investigations of the basal face edge are in qualitative agreement with the basic relationships characterizing the growth kinetics of crystals in a kinetic and a diffusion regime. Experimental facts are presented (e.g. the parallel running a 2 ( t ) curves, etc.) which confirm the diffusion character of thc observed transition of thc basal edge of zinc single crystals from a kinetic regime to a diffusion growth mode.