Simulation of Crystallization Process in Facilities for Growing Monocrystals

The influence of the crucible material on technological parameters of the crystallization process (shape of crystallization front, speed of crystal growth, temperature gradient in the system crystal-melt) is studied with reference to a method of the axial heat flux near the crystallization front ("OTF"-method) using mathematical simulation methods. The influence of gas convection on the temperature distribution in the "OTF"-facility is investigated as well. It is shown that a choice of the crucible material and also the convection in gas taken into account make a great impact on the temperature distribution in the crystallization region and hence on the crystal parameters.