Fins on the crucible or gussets on the refractory lining to facilitate the removal of impurities from the boule.

Abstract

A furnace and a method for growing high-temperature oxide crystals in the furnace. The furnace includes a crucible having a molten body inside and a heating element for generating heat within the molten body. The heating element in the furnace generates a thermal gradient within the molten body, pulling the low-temperature portion of the convection cell of the molten body away from the seed position in the crucible, so that the seed crystal is pulled out of the molten body at the seed position, forming a boule for growing high-temperature oxide crystals.

Claims

1. A method for growing high-temperature oxide crystals, A step of placing a molten body in a crucible, wherein the crucible includes at least one heat element. A step of heating the molten body in the crucible, wherein the at least one heat element generates a thermal gradient within the molten body, and separates the low-temperature portion of the convection cell of the molten body from the seed position in the crucible, and A method comprising the steps of: pulling up a Boule from the seed position in the crucible; and growing the high-temperature oxide crystal.

2. The method according to claim 1, wherein the thermal element includes at least one fin extending from the outer surface of the crucible.

3. The method according to claim 2, wherein the at least one fin includes a first fin having a first thermal resistance at a first position on the outer surface and a second fin having a second thermal resistance at a second position on the outer surface.

4. The method according to claim 2, wherein the thermal element further comprises at least one gusset extending inward from the heat packing material surrounding the crucible.

5. The method according to claim 4, wherein the at least one gusset includes a first gusset having a first thermal resistance at a first position of the heat filler and a second gusset having a second thermal resistance at a second position of the heat filler.

6. The method according to claim 1, wherein the thermal element further comprises a first baffle at a first position along the inner surface of the crucible and a second baffle at a second position along the inner surface, the first baffle having a first thermal resistance and the second baffle having a second thermal resistance.

7. The method according to claim 6, wherein the first cross-section of the first baffle is different from the second cross-section of the second baffle.

8. The method according to claim 1, wherein the thermal element further comprises a lid for the crucible, the lid having a first baffle and a second baffle extending from the lid into the molten body.

9. A furnace for growing high-temperature oxide crystals, A crucible containing a molten material inside, A heating element for generating heat in the molten body, A thermal element in the furnace that generates a temperature gradient within the molten body and separates the low-temperature portion of the convection cell of the molten body from the seed position in the crucible, and At the aforementioned seed position, a Boule is pulled up from the molten material to form a seed crystal for growing the high-temperature oxide crystal. A furnace equipped with a furnace.

10. The furnace according to claim 9, wherein the thermal element includes at least one fin extending from the outer surface of the crucible.

11. The furnace according to claim 10, wherein the at least one fin includes a first fin having a first thermal resistance at a first position on the outer surface and a second fin having a second thermal resistance at a second position on the outer surface.

12. The furnace according to claim 9, wherein the thermal element further comprises at least one gusset extending inward from the heat packing material surrounding the crucible.

13. The furnace according to claim 12, wherein the at least one gusset includes a first gusset having a first thermal resistance at a first position of the heat packing material and a second gusset having a second thermal resistance at a second position of the heat packing material.

14. The furnace according to claim 9, wherein the thermal element further comprises a first baffle at a first position along the inner surface of the crucible and a second baffle at a second position along the inner surface, the first baffle having a first thermal resistance and the second baffle having a second thermal resistance.

15. The furnace according to claim 14, wherein the first cross-section of the first baffle is different from the second cross-section of the second baffle.

16. The furnace according to claim 9, wherein the heating element further comprises a lid for the crucible, the lid having a first baffle and a second baffle extending from the lid into the molten body.

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