Abstract
Investigations with model liquids of the convection flow rate under the crystal during its growth from a high-temperature solution according to the TSSG method have been carried out in the cases of: (a) forced convection, (b) free convection, and (c) simultaneous free and forced convection. Dependences between the rate of convection flow and the physicochemical properties of the liquid have been found and presented in their explicit form. For the case of simultaneous free and forced convection, which mostly occurs, intervals of convection flow rates are found for different crystal diameters, within which a flat crystal/liquid interface is formed. A dependence is established between the flow rate and the character and amplitude of temperature fluctuations on the interface. The conditions have been determined under which the formation of a flat interface in the absence of temperature fluctuations may be expected.
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