On possible simultaneous heating and stirring of the melt at single crystal growth by one inductor of electromagnetic field

Yu. Gelfgat - J. Krūmiņš - M. Abricka

Institute of Physics, University of Latvia, Salaspils-1, LV-2169, Latvia

Abstract
The paper discusses the relationship of heat intensity and melt stirring in high-frequency electromagnetic fields and the parameters of a device, at which a compromise is achieved between the required values of heating and melt stirring. In particular, the paper analyzes a possibility to exchange the pulsating HF magnetic field, traditionally applied to heat the melt, for a travelling electromagnetic field. It is shown that both technological functions -- heating and strong stirring of the melt -- can be achieved in one device at optimal values of the travelling electromagnetic field frequency. A method for calculating the parameters is proposed, which allows to consider approximately the finite dimensions of the vessel and the inductor for different technologies of single crystal growth. Figs 8, Refs 3.