| 摘要 |
PURPOSE:To produce an x axis-oriented lithium niobate single crystal without any macrodefect or microdefect. CONSTITUTION:A seed crystal is brought into contact with a melt in a crucible, and the single crystal is rotated and pulled up to grow a lithium niobate single crystal with the growth orientation as the x axis. In this case, the solid-liq. interface is concaved toward the melt by controlling the revolving speed of the crystal, and a/R expressing the concavity ((a) is the concave depth, and R is the crystal diameter) is limited to conform to 0.01<=a/R<=0.10. |
