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DIE AND DIE PACK FOR GROWING SAPPHIRE SINGLE CRYSTALS, APPARATUS FOR GROWING SAPPHIRE SINGLE CRYSTALS, AND METHOD FOR GROWING SAPPHIRE SINGLE CRYSTALS
DIE AND DIE PACK FOR GROWING SAPPHIRE SINGLE CRYSTALS, APPARATUS FOR GROWING SAPPHIRE SINGLE CRYSTALS, AND METHOD FOR GROWING SAPPHIRE SINGLE CRYSTALS
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机译:用于生长蓝宝石单晶的模具和模具包,用于生长蓝宝石单晶的装置以及用于生长蓝宝石单晶的方法
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摘要
[Problem] To provide: a sapphire single crystal which has a large diameter and exceptional crystalline quality, by rapidly determining, without the need for an extended period of time or imposing costs, the curvature R of the top surface of a die used for growing sapphire single crystals by the EFG process; and a sapphire substrate. Additionally, to provide a die and die pack for use in growing sapphire single crystals by the EFG process, and a method for growing sapphire single crystals. [Solution] Used is a die for use in growing sapphire single crystals by the EFG process, the die being characterized in that: the upper surface has a curvature R in the lengthwise direction; and the curvature R is no more than five times the width W in the lengthwise direction.
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