| 摘要 |
PROBLEM TO BE SOLVED: To provide a production method by which identification of the separation between a single crystal bar and a melt is automated and also, the operation for separating a single crystal bar from a melt in the latter half of a tailing stage is automated and further, a single crystal can be produced through unmanned automatic control, and also to provide the equipment for the method. SOLUTION: This production method comprises: bringing a seed crystal into contact with a melt or placing a seed crystal on a melt, to perform the necking operation and to form a conical part by gradually increasing the crystal diameter; thereafter, pulling up a single crystal having a prescribed diameter to form a body having a prescribed length; thereafter, gradually decreasing the crystal diameter to form a tail; and separating the resulting grown single crystal from the melt, wherein separation of the tail of the grown single crystal from the melt is detected from a change in temp. of the surface of the melt.
|
