| 摘要 |
PROBLEM TO BE SOLVED: To provide a production method of a lithium tantalate single crystal capable of producing a high-quality lithium tantalate single crystal.SOLUTION: In a production method of a lithium tantalate single crystal, a melt is prepared by melting a raw material including a lithium-containing compound containing lithium, a tantalum-containing compound containing tantalum, and a fluorine-containing compound containing fluorine, and a lithium tantalate single crystal is produced from the melt. In the production method of a lithium tantalate single crystal, a fluorine-containing compound containing fluorine is blended into the raw material, and a fluorine-containing compound having a lower melting point than the temperature of the melt and having a higher boiling point than the temperature of the melt is used as the fluorine-containing compound. |
