PROCEDE ET DISPOSITIF DE CONTROLE EN CONTINU DE LA SURFUSION DU FRONT DE SOLIDIFICATION D'UN MONOCRISTAL EN COURS D'ELABORATION ET APPLICATION AU CONTROLE DE LA CROISSANCE D'UN CRITAL

摘要

The present invention relates to a process and an apparatus for checking the supercooling of a monocrystal during its formation. There is a continuous measurement of the potential difference between one point of the forming crystal and one point of a solid part of the material separated from the liquid by a reference interface differing from the solidification front. This potential difference makes is possible to determine the temperature deviation due to the supercooling at the solidification front and the dopant concentration of the crystal being formed.