| Bridgman法生长TeO2晶体的缺陷分析 |
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| 引用本文： | 储耀卿,陈之战,李耀刚,钱永彪. Bridgman法生长TeO2晶体的缺陷分析[J]. 人工晶体学报, 2009, 38(2): 481-485 |
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| 作者姓名： | 储耀卿 陈之战 李耀刚 钱永彪 |
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| 作者单位： | 中国科学院上海硅酸盐研究所,上海,200050;东华大学材料学院,上海,200051;上海RAE系统公司,上海,201800 |
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| 基金项目： | Ministry of Education of the People's Republic of China，Shanghai Committee of Science and Technology，国家自然科学基金 |
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| 摘 要： | 采用Bridgman法生长了二氧化碲(TeO2)晶体,运用光学显微镜、电子衍射光谱、化学腐蚀等方法分析了该方法生长TeO2晶体内部的缺陷.初步讨论了散射点、微裂纹、气泡和黑点、条纹以及腐蚀坑等微缺陷的形成机理.结果表明:晶体内部的散射点来自于原料中杂质,条纹主要是由于晶体内应力引起,晶体内的气泡和黑点和晶体生长的温度密切相关,并就如何减少这些微缺陷进行了初步探讨.
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| 关 键 词： | TeO2晶体 晶体缺陷 Bridgman法 晶体生长 形成机理 |
Defects of TeO_2 Crystals Grown by Bridgman Method |
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| CHU Yao-qing,CHEN Zhi-zhan,LI Yao-gang,QIAN Yong-biao. Defects of TeO_2 Crystals Grown by Bridgman Method[J]. Journal of Synthetic Crystals, 2009, 38(2): 481-485 |
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| Authors: | CHU Yao-qing CHEN Zhi-zhan LI Yao-gang QIAN Yong-biao |
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| Abstract: | TeO2 crystals were grown by Bridgman method. Optical microscopy, electronic diffraction spectrum, and chemical etching were used to investigate the crystal defects. The formation mechanism of different defects such as scatter-point, cleavage, bubble and black inclusion, striation and etch pit was discussed. The results indicated that scatter-points were resulted from impurities of starting materials. Cleavages are mainly caused by crystal stress. Formations of black inclusions and bubbles were mainly relate... |
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| Keywords: | TeO2 crystal crystal defects Bridgman method crystal growth formation mechanism |
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