Premium
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
Author(s) -
Iwanov D.
Publication year - 1990
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170250303
Subject(s) - diffusion , kinetics , kinetic energy , chemistry , supersaturation , zinc , crystallography , enhanced data rates for gsm evolution , diffusion process , crystal growth , analytical chemistry (journal) , thermodynamics , physics , chromatography , computer science , telecommunications , knowledge management , innovation diffusion , organic chemistry , quantum mechanics
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 × 10 −6 Torr has been plotted. It is established that the length a of the edge of the {0001} face is changed with time t according to a linear and a parabolic dependence. The kinetic critical size a k is determined by the intersection point between the two parts of a 2 ( 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 the observed transition of the basal edge of zinc single crystals from a kinetic regime to a diffusion growth mode.