Patent ID: 9624599
Date: 2017-04-18
CPC Classifications: C30B

Claim:
1. A method for manufacturing a SiC single crystal in which a SiC single crystal is grown from a Si solution of C in a crucible, employing alternate repetition between a high supersaturation growth period in which growth is progressed while keeping a degree of supersaturation of C in the Si solution at a growth boundary between the growing SiC single crystal and the Si solution higher than a maximum critical value at which flat growth can be maintained, and a low supersaturation growth period in which growth is progressed while keeping the degree of supersaturation lower than the critical value, wherein the ratio between a value Sa which is the difference between the high degree of supersaturation and the critical value integrated over a continuous time during the high supersaturation growth period, and a value Sb which is the difference between the low degree of supersaturation and the critical value integrated over a continuous time during the low supersaturation growth period, Sb/Sa, is greater than or equal to 1.25.