Patent ID: 8308864

Claim:
A single-crystal manufacturing method based on the Czochralski method, comprising at least the steps of: producing a melt by heating and melting a crystalline raw material in a crucible with a heater; maturing the melt by keeping the melt at a high temperature; and growing a single crystal after dipping a seed crystal into the matured melt, wherein the heater and the crucible are relatively moved up and down in the step of maturing, and heater power at the start of the step of maturing is higher than that at the start of the step of growing the single crystal and is equal to or lower than that of the step of producing the melt, and the heater power at the end of the step of maturing is lower than that of the step of producing the melt and is equal to or higher than that at the start of the step of growing the single crystal.