| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a crystal manufacturing method capable of manufacturing a crystal excellent in optical characteristics such as internal transmittance by reducing internal faults, and a unit for that. <P>SOLUTION: This is a crystal manufacturing unit in which a single crystal is grown by lowering a crucible in which the feed of the crystalline substance is contained, and has a step in which the feed is melted, and a step in which a temperature distribution is formed, that is, as the crucible is lowered the temperature at the bottom of the crucible is raised. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
