| 熔盐生长KTiOPO4晶体的层绵成因与克服方法 |
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| 引用本文： | 肖超亮,刘玉洁,王奇伟,李文秀,许燕萍,谭进阁,贾寿泉.熔盐生长KTiOPO4晶体的层绵成因与克服方法[J].物理学报,1991,40(1):78-83. |
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| 作者姓名： | 肖超亮 刘玉洁 王奇伟 李文秀 许燕萍 谭进阁 贾寿泉 |
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| 作者单位： | 中国科学院物理研究所,北京,100080 |
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| 摘 要： | 本文用光学显微术观察了在多磷酸钾盐熔盐中生长的KTiOPO4(KTP)晶体的表面形态和内部疵病,并借助扫描电子显微镜和能谱分析得到了横贯层绵结构的体过饱和度变化规律。基于上述结果,阐明了在不适当的生长条件下,由于晶面上熔质分布高度不均匀而形成宏观包藏——层绵的原因与过程。当熔液浓度位于稳定生长所需的临界过饱和度区域内,即各处σ均大于该区的下限(～1.3)时,重复长出了无层绵透明的KTP晶体。
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| 收稿时间： | 1990-02-10 |
FORMATION AND ELIMINATION OF LAYER-LIKE FLOSS IN THE FLUX KTiOPO4 CRYSTALS |
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| XIAO CHAO-LIANG,LIU YU-JIE,WANG QI-WEI,LI WEN-XIU,XU YAN-PING,TAN JIN-GE and JIA SHOU-QIAN.FORMATION AND ELIMINATION OF LAYER-LIKE FLOSS IN THE FLUX KTiOPO4 CRYSTALS[J].Acta Physica Sinica,1991,40(1):78-83. |
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| Authors: | XIAO CHAO-LIANG LIU YU-JIE WANG QI-WEI LI WEN-XIU XU YAN-PING TAN JIN-GE and JIA SHOU-QIAN |
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| Abstract: | The surface morphology and interior flaws of KTiOPO4 (KTP) crystals grown in pota-sium polyphosphates flux solution were observed with optical microscopy. The fluctuation pattern of bulk supersaturations across the layer-like floss in the crysrals was obtained with scanning electron microscope and energy spectrum analysis. Based on the above results, the causes and process for the formation of macro inclusion-layer-like floss due to the high in-homogeneity of solute distribution on the grown face under some inappropriate growth conditions were elucidated. The flossless and transparent KTP crystals have been grown rapeatedly when the cocentrations of solution were located in the region of critical bulk supersaturation for steady growth, namely the σ was everywhere larger than the lower limit (～1.3) of the region. |
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