Patent ID: 8956454
Filing Date: 2015-02-17
Classification: C30B,Y10S,Y10T

Abstract:
1. A method for producing material having a monocrystalline or multicrystalline structure, with the steps: a) introduction of the particulate material mixture into an inlet of a container configured as a crucible, b) heating of the material mixture in the melting zone of the container by means of an induction coil, in order to provide a melt of the material mixture, the container being designed conically in order to ensure a subsequent flow of the melt of the material mixture toward an outlet of the container, and the induction coil being arranged outside the container and serving to surround the container essentially in the form of a ring in the conical container portion, the material mixture in the melting zone of the container being supported statically via a pressure difference between the inlet and the outlet of the container, the pressure difference being proportional to the height of the melt, the static support taking place between two chambers which are separated by the container and between which the pressure difference prevails, either each of the chambers being regulated separately in terms of pressure or these chambers being connected to one another by regulation of the pressure difference c) contacting the material mixture, in the melting zone, with an inoculating crystal, at or adjacent to the outlet of the container; and d) pulling of the material mixture out of the melting zone in order to form the monocrystalline or multicrystalline structure.