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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
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.-
Keywords:
- KTa1－xNbxO3 crystal /
- solid-liquid boundary layer /
- high temperature Raman spectra /
- in situ measurement
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[1] Wang W K, Wang J Y, Zhao S R 2001 Crystal Morphology (Wuhan: China University of Geosciences Press) p36 (in Chinese) [王文魁、王继扬、赵珊茸 2001 晶体形貌学 (武汉: 中国地质大学出版社) 第36页]
[2] Chen F S, Geusic J E, Kurtz S K, Skinner J G, Wemple S H 1966 J. Appl. Phys. 37 388
[3] Wang J Y, Guan Q C, Wei J Q 1995 Prog. Natl. Sci. 5 277 (in Chinese) [王继扬、管庆才、魏景谦 1995 自然科学进展 5 277]
[4] You J L, Huang S P, Dong Z Y 1999 Opt. Instru. 21 21 (in Chinese) [尤静林、黄世萍、董朝阳 1999 光学仪器 21 21]
[5] You J L, Jiang G C, Hou H Y, Wu Y Q, Chen H, Xu K D 2002 Chin. Phys. Lett. 19 205
[6] You J L, Jiang G C, Wen Q, Hou H Y, Wu Y Q, Chen H 2002 Chin. J. Light Scattering 13 240 (in Chinese) [尤静林、蒋国昌、文 启、侯怀宇、吴永全、陈 辉 2002 光散射学报13 240]
[7] Qiu H L, Wang A H, You J L, Liu X J, Chen H, Yin S T 2005 Spectrosc. Spectr. Anal. 25 222 (in Chinese) [仇怀利、王爱华、尤静林、刘晓静、陈 辉、殷绍唐 2005 光谱学与光谱分析 25 222]
[8] Qiu H L, Wang A H, You J L, Chen H, Yin S T 2005 Spectrosc. Spectr. Analy. 25 529 (in Chinese) [仇怀利、王爱华、尤静林、陈 辉、殷绍唐 2005 光谱学与光谱分析 25 529]
[9] Zhang X, Wan S M, Zhang Q L, Yin S T, You J L, Chen H, Wang A H 2007 Acta Phys. Sin. 56 1152 (in Chinese) [张 霞、万松明、张庆礼、殷绍唐、尤静林、陈 辉、王爱华 2007 56 1152]
[10] Zhang X, Yin S T, Wan S M, You J L, Chen H, Zhao S J, Zhang Q L 2007 Chin. Phys. Lett. 24 1898
[11] Wan S M, Zhang X, Zhao S J, Zhang Q L, You J L, Chen H, Zhang G C, Yin S T 2007 J. Appl. Crystallogr. 40 725
[12] Wan S M, Zhang X, Zhao S J, Zhang Q L, You J L, Lu L, Fu P Z, Wu Y C, Yin S T 2008 Cryst. Growth Des. 8 412
[13] Qiu H L, Wang A H, Liu X J, Yin S T 2002 J. Synth. Cryst. 31 555 (in Chinese) [仇怀利、王爱华、刘晓静、殷绍唐 2002 人工晶体学报 31 555]
[14] Xia H R, Li L X, Wang J Y, Liu Y G, Wei J Q 2000 Cryst. Res. Technol. 35 1209
[15] Kugel G E, Mesli H, Fontana M D 1988 Phys. Rev. B37 5619
[16] Hu Y M, Gu H S, Hu Z L, Wang H 2007 J. Colloid Interface Sci. 310 292
[17] Wang J Y, Li L X, Guan Q C, Wei J Q, Liu Y G 1993 Appl. Laser 13 193 (in Chinese) [王继扬、李丽霞、管庆才、魏景谦、刘耀岗 1993 应用激光 13 193]
[18] Zhou W P, Wan S M, Yin S T, Zhang Q L, You J L, Wang Y Y 2009 Acta Phys. Sin. 58 570 (in Chinese) [周文平、万松明、殷绍唐、张庆礼、尤静林、王媛媛 2009 58 570]
[19] Zhong W Z, Hua S K 1999 Morphology of Crystal Growth (Beijing: Science Press) p208 (in Chinese) [钟维卓、华素坤 1999 晶体生长形态学 (北京: 科学出版社) 第208页]
[20] Anghel E M, Florian P, Bessada C 2007 J. Phys. Chem. B111 962
[21] Sasaura M, Imai T, Kohda H, Tohno S, Shimokozono M, Fushimi H, Fujiura K, Toyoda S, Enbutsu K, Tate A, Manabe K, Matsuura T, Kurihara T 2005 J. Cryst. Growth 275 e2099
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