Abstract
Direct crystallization is widely used in the production of multicrystalline silicon. The efficient way for the silicon melt stirring control is to use magnetic fields. The paper provides the results of mathematical modeling of electromagnetic stirring of silicon melt under various conditions. Mathematical modeling was carried out using COMSOL Multiphysics software. In the course of modeling, the distributions of the magnetic field induction, the densities of the Lorentz force, and the melt stirring velocities were obtained. The distribution of the surface rate of the melt movement was determined. The experimental studies were carried out on a direct crystallization G5 unit. To create a running magnetic field, a current pulse generator was made. In the course of the study a physical and mathematical model of electromagnetic stirring of silicon melt was developed; a pilot unit was created and experimental studies were carried out; the optimal conditions for obtaining a stable, repeatable process of silicon melt stirring were established.
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The datasets generated during the current study are available from the corresponding author on reasonable request.
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Karabanov, S.M., Suvorov, D.V., Tarabrin, D.Y. et al. Control of direct crystallization by a running magnetic field. MRS Advances 6, 619–624 (2021). https://doi.org/10.1557/s43580-021-00083-4
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DOI: https://doi.org/10.1557/s43580-021-00083-4