INFLUENCE OF CONVECTIVE THERMAL OSCILLATIONS ON A SOLIDIFICATION INTERFACE IN BRIDGMAN GROWTH

This work focuses on the behavior of a solidification front in presence of convective thermal fluctuations which occur in the liquid phase. The study first presents a theoretical approach which enables one to relate the variations of the growth parameters (growth rate, concentration at the interface, etc.) to those of the heat flux through the interface. The second part of the study shows experimental results obtained in this field with the help of an original method developed in the laboratory, and compares theoretical predictions and experimental results.