Patent ID: 9163325
Filing Date: 2015-10-20
Classification: C30B,Y10T

Abstract:
1. A crystal growth apparatus, comprising: a reaction vessel; a crucible disposed inside said reaction vessel and holding a melt mixture containing an alkali metal and a group III metal; a gas supplying unit supplying a nitrogen source gas to a vessel space exposed to said melt mixture inside said reaction vessel; a heating unit heating said crucible and said reaction vessel to a crystal growth temperature; a heat blanket apparatus blanketing said crucible and said reaction vessel thermally, wherein the heat blanket apparatus comprises a shielding member surrounding said reaction vessel, and an outer reaction vessel accommodating said reaction vessel and said shielding member therein, wherein the shielding member interrupts a gas flow away from said reaction vessel, and wherein said gas supplying unit is configured such that the outer reaction vessel can be maintained at a pressure higher than atmospheric pressure.