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US 12,404,600 B2Granted
Fins on crucible or gussets on refractory lining for facilitating exclusion of impurities from a boule
AssigneeSiemens Medical Solutions USA, Inc.
InventorsPeter Cohen, Troy Marlar, Mark Andreaco
Life of this patent
Estimating the term…
Abstract
A furnace and a method of growing a high temperature oxide crystal in the furnace. The furnace includes a crucible having a melt therein and a heating element for generating heat in the melt. A thermal element within the furnace produces a thermal gradient within the melt to draw a cold spot of a convection cell of the melt away from a seed location of the crucible. A seed crystal is drawn from the melt at the seed location to form a boule to grow the high temperature oxide crystal.
Claims7
A furnace for growing a crystal, comprising:
- a crucible having a melt therein, the crucible having right cylindrical inner surface;
- a first baffle projecting radially inward from the right cylindrical inner surface at a first location and a second baffle projecting radially inward from the inner surface at a second location diametrically opposite the first baffle, wherein an amount by which the first baffle and the second baffle project radially inward from the right cylindrical inner surface is greatest at a bottom of the crucible and decreases with height to be flush with the right cylindrical inner surface at a top of the crucible, wherein a first transverse cross-section of the first baffle is different from a second transverse cross-section of the second baffle;
- a heating element for generating heat in the melt;
- and
- a rod for drawing the crystal from the melt at a seed location to grow the crystal.
2 more elements
Dependencies are inferred from the claim text.