| Ca改性钛酸铅Pb_(1-x)Ca_xTiO_3纳米晶的拉曼光谱研究 |
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| 引用本文： | 强亮生,王旭.Ca改性钛酸铅Pb_(1-x)Ca_xTiO_3纳米晶的拉曼光谱研究[J].光散射学报,1999,11(2):118-122. |
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| 作者姓名： | 强亮生 王旭 |
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| 作者单位： | [1]哈尔滨工业大学应用化学系 [2]黑龙江大学化学化工学院 |
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| 基金项目： | 黑龙江省自然科学基金,黑龙江大学杰出青年科学基金 |
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| 摘 要： | 本文在２８８Ｋ和３７８Ｋ温度下测定了不同Ｃａ含量Ｐｂ１－ｘＣａｘＴｉＯ３（ＰＴＣ）纳米晶的拉曼光谱。同时在室温条件下测定了不同晶粒尺寸Ｐｂ０．８５Ｃａ０．１５ＴｉＯ３的拉曼光谱。讨论了Ｃａ掺入量、温度、晶粒尺寸等因素对声子频率的影响。声子频率的变化情况表明，对于ｘ≥０．２的ＰＴＣ纳米晶，与相同Ｃａ含量的陶瓷相比，存在着晶格膨胀的倾向。
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| 关 键 词： | Ca改性钛酸铅 纳米晶 傅立叶变换拉曼散射 声子 |
FT Raman Spectroscopic Study on Pb 1-x Ca xTiO 3 Nanocrystals |
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| QIANG Liang sheng,DING Zhi li,WANG Xu,FU Hong gang,YU Hai tao,ZHANG Xin,ZHAO Bing,XU Wei qing.FT Raman Spectroscopic Study on Pb 1-x Ca xTiO 3 Nanocrystals[J].Chinese Journal of Light Scattering,1999,11(2):118-122. |
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| Authors: | QIANG Liang sheng DING Zhi li WANG Xu FU Hong gang YU Hai tao ZHANG Xin ZHAO Bing XU Wei qing |
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| Institution: | 1QIANG Liang sheng,1DING Zhi li,2WANG Xu,3FU Hong gang,3YU Hai tao,3ZHANG Xin,2ZHAO Bing,2XU Wei qing |
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| Abstract: | FT Raman Spectra of Pb 1-x Ca xTiO 3 nanocrystals with different lanthanum amount were measured at 288K and 378K. Several nanocrystals of different grain size of Pb 0.85 Ca 0.15 TiO 3 were also prepared at 288K. The effect of the amount of lanthanum, grain size and temperature on phonon frequency were discussed indetail. Furthermore, based on comparison of the frequency of PTC nanocrystal with x≥0.2, and that of ceramic with the same amount of calcium, we can conclude that lattice expansion is present in PTC nanocrystals. |
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| Keywords: | calcium modified lead titanate nanocrystal FT Raman phonon |
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