Bridgman crystal growth

Abstract

The primary focus was on completing a simulation of thermosolutal convection. The configuration employed was based on some MIT experiments using a Germanium-Silicon charge in a quartz ampoule with an aspect ratio of 8 and a rather large adiabatic zone. Two thermally stable cases were investigated: solutally unstable and solutally stable. Both use the same equilibrium phase diagram and thermophysical properties except the sign of the solutal coefficient of volume expansion is reversed. The results are discussed.