| KTa1-xNbxO3晶体生长固/液边界层结构的微区研究 |
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| 引用本文： | 周文平,万松明,张庆礼,殷绍唐,尤静林,王媛媛.KTa1-xNbxO3晶体生长固/液边界层结构的微区研究[J].物理学报,2010,59(7):5085-5090. |
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| 作者姓名： | 周文平 万松明 张庆礼 殷绍唐 尤静林 王媛媛 |
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| 作者单位： | (1)上海大学上海市钢铁冶金新技术开发应用重点实验室,上海 200072; (2)中国科学院安徽光学精密机械研究所,合肥 230031 |
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| 基金项目： | 国家自然科学基金(批准号:50472104)资助的课题. |
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| 摘 要： | 测量了KTa1－xNbxO3(KTN)晶体在常温和高温下的Raman光谱;实时测量了晶体生长过程中,固/液边界层内以及边界层两侧的晶体和熔体的高温显微Raman光谱.通过光谱分析获得了KTN晶体生长固/液边界层内的结构特征,以及晶体生长基元从熔体结构经边界层过渡到晶体结构的变化规律.研究表明,KTN熔体中的 结构基团进入到生长边界层后逐步转化为 八面体结构基团,已具有KTN单胞的一些特征.进而讨论了以 八
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| 关 键 词： | KTa1－xNbxO3晶体 固/液边界层 高温Raman光谱 实时测量 |
| 收稿时间： | 9/8/2009 12:00:00 AM |
Micro-structure of growth solid-liquid boundary layer of KTa(1-X)NbxO3NbxO3 crystal |
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| Zhou Wen-Ping,Wan Song-Ming,Zhang Qing-Li,Yin Shao-Tang,You Jing-Lin,Wang Yuan-Yuan.Micro-structure of growth solid-liquid boundary layer of KTa(1-X)NbxO3NbxO3 crystal[J].Acta Physica Sinica,2010,59(7):5085-5090. |
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| Authors: | Zhou Wen-Ping Wan Song-Ming Zhang Qing-Li Yin Shao-Tang You Jing-Lin Wang Yuan-Yuan |
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| Institution: | (1)Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; (2)Shanghai Enhanced Laboratory of Ferro-metallurgy, Shanghai University, Shanghai 200072, China |
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| Abstract: | Raman spectra of KTa1－xNbxO3(KTN) single crystal,its melt, and the solid-liquid boundary layer in the growing process at different temperatures were measured in-situ. The structure transformation in KTN crystal growth process was investigated. The results showed that the Ta/NbO3] entities came into solid-liquid boundary layer from KTN melt, and they were transformed to Ta/NbO6] octahedron entities. And the structure of Ta/NbO6] octahedron entity was just like that of KTN single cell. Regarding Ta/NbO6] octahedron as growth units, the growth habit of KTN crystal in which the (100), (1-00), (010) and (01-0) faces are easily revealed was discussed. The thickness of the growth solid-liquid boundary layer of KTN crystal was about 80—90 μm. |
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| Keywords: | KTa1-xNb<em>xO3 crystal solid-liquid boundary layer high temperature Raman spectra in situ measurement |
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