Patent ID: 8641821

Claim:
A manufacturing device of an aluminum nitride single crystal, the manufacturing device comprising a crucible, the crucible storing in an inner portion of the crucible, an aluminum nitride raw material and a seed crystal placed so as to face the aluminum nitride raw material, wherein the crucible comprises: an inner crucible, the inner crucible storing the aluminum nitride raw material and the seed crystal inside the inner crucible, the inner crucible also being corrosion resistant to a sublimation gas of the aluminum nitride raw material, and the inner crucible comprising a single body of a metal having an ion radius larger than an ion radius of an aluminum or a nitride of the metal; an upper lid mounted on an upper surface of the inner crucible, the upper lid comprising a single body of a metal having an ion radius larger than an ion radius of an aluminum or a nitride of the metal; and an outer crucible, the outer crucible comprising a boron nitride, the outer crucible also covering the inner crucible; and a lid body mounted on an upper surface of the outer crucible, the lid body comprising a boron nitride, wherein, the outer crucible is placed so as to be adhered to a peripheral surface of the inner crucible and the upper lid, and the lid body is placed so as to be adhered to an upper surface of the upper lid.