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AssigneesInstitut Polytechnique De Grenoble, Centre National De La Recherche Scientifique, Universite Grenoble Alpes
InventorsKader ZAIDAT, Christian GARNIER, Ghatfan HASAN
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A cold crucible usable in the field of high-temperature production of monocrystalline materials. The cold crucible includes: a cold cage which has sectors made of a material having good electrical conductivity and in which a charge is melted, and a cooling device with heat transfer fluid, configured to cool each segment of the cold cage from the inside. The cold crucible is essentially such that it further includes at least one device for generating a static magnetic field, each generating device being housed inside one of the sectors of the cold crucible. Each static magnetic field thus generated having the effect of slowing down the electromagnetic stirring of the molten charge, such that it is possible to produce monocrystalline ingots of significantly larger diameter than the diameter of the seed initiating their growth.
A cold crucible comprising:
The cold crucible according to claim 13, wherein the cold crucible further comprises a device for fastening and holding the sectors together, said device being configured so that the sectors fastened and held form at least part of the cold cage.
The cold crucible according to claim 15, wherein a support portion of the generation is configured to support a plurality of permanent magnets and to form with the inner walls of its housing in the sector a circulation corridor for the heat-transfer fluid of the cooling device.
Dependencies are inferred from the claim text.