| 摘要 |
<p>A cover member (40) of an apparatus (1) for producing single crystals is provided with a projection (41) generally in the center. The projection (41) is disposed so as to protrude toward the inside of a crucible main body (30) through a cover member opening (40a). A seed crystal (10) is disposed between a supporting portion (432) and a contact surface (41a) of the projection (41) which is inserted into a guide opening (43h). The apparatus (1) for producing single crystals is configured such that the contact surface (41a) presses the entire back surface of the seed crystal (10), said back surface being on the reverse side of the crystal growth surface of the seed crystal (10), against the projection (41) when a screw thread (41s) that is formed on the projection (41) is screwed to a thread groove (43g) that is formed on an engaging portion (431).</p> |
