| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing an oxide single crystal without forming a tail and having no crystal defect in its straight body part by Cz method using a feed material having a crystal composition different from the melt solution composition. SOLUTION: In this method, in a manufacturing method of an oxide single crystal with a crystal composition different from the melt solution composition by the Cz method, a part of a pulled crystal is melted and the crystal is separated from the melt solution. In more detail, there is a method in which pulling of the crystal is stopped to raise the melt solution temperature and melt a part of the crystal after the growing of a straight body part, a method in which pulling of the crystal and heating of the melt solution are carried out under a condition where the melt length of the crystal by the temperature rise of the melt solution is greater than the crystal grow length by the pulling, and a method in which crystal is drawn down and the lower part of the crystal is contacted with the melt solution or partly dipped. This method is used in manufacturing a single crystal with a crystal composition different from the melt solution composition such as lithium niobate, lithium tantalate, and strontium/barium niobate. COPYRIGHT: (C)2005,JPO&NCIPI
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