Method and device of the control of the fusion of the solidification front of a single crystal in the course of production and application to the control of the growth of a crystal

摘要

The present invention relates to a process and a device for monitoring the supercooling of a single crystal in the course of production. / p & & p & it is continuously measures the difference in potential between a point 74 of the crystal 66 in the course of formation and a point 72 of a solid portion 38 of the separate from the liquid 36 by an interface of the reference 40 different of the solidification front 64. This difference in potential enables determining the supercooling at the level of the solidification front 64 and the dopant concentration of the crystal being formed. / p & & p & application to the control of the composition of a single crystal in the course of production.