Growth of stable shaped single crystals by the micro-pulling-down method with automatic power control system

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• 作者：Rayko Simura ; Vladimir V. Kochurikhin ; Akira Yoshikawa ; Satoshi Uda
• 关键词：A2. Growth from melt ; A2. Micro-pulling-down method ; A2. Single-crystal growth ; B2. Oxides
• 刊名：Journal of Crystal Growth
• 出版年：2008
• 期刊代码：49_00220248
• 类别：ch
• 出版时间：April 2008
• 卷：310
• 期：7-9
• 页码：2148-2151
• 文件大小：464 K

摘要

A control system with automatic power alterations to stabilize the temperature at the meniscus area was developed for crystal production by the micro-pulling-down technique. The system was successfully applied to the growth of Lu₃Al₅O₁₂ and Al₂O₃ crystals with stable shape rod up to 110 mm in length. The developed system gives a possibility to prevent the crystal quality from degradation caused by the uncontrollable change of the meniscus height. Application of the developed system can help to minimize the number of preliminary experiments needed for the optimization of the growth conditions and to increase the crystal shape uniformity.