| 量子顺电体La1/2Na1/2TiO3纳米晶的制备与谱学表征 |
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| 引用本文： | 张伟风,张兴堂,郭虹,方江邻,张明生.量子顺电体La1/2Na1/2TiO3纳米晶的制备与谱学表征[J].高等学校化学学报,1999,20(4):515-518. |
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| 作者姓名： | 张伟风 张兴堂 郭虹 方江邻 张明生 |
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| 作者单位： | 1. 河南大学物理系, 开封 475001;
2. 南京大学现代分析中心, 南京 210093 |
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| 摘 要： | 用改进硬脂酸溶胶-凝胶法制备了量子顺电体La1/2Na1/2TiO3纳米晶,用差热-热重分析和X射线衍射测试了样品的晶化过程及物相结构,用FTIR和Raman光谱表征了其谱学特性.
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| 关 键 词： | La1/2Na1/2TiO3 纳米晶体 溶胶－凝胶法 晶格振动谱 |
| 收稿时间： | 1998-04-21 |
Preparation and Characterization of Quantum ParaelectricLa1/2Na1/2TiO3 Nanocrystals |
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| ZHANG Wei-Feng,ZHANG Xing-Tang,GUO Hong,FANG Jiang-Lin,ZHANG Ming-Sheng.Preparation and Characterization of Quantum ParaelectricLa1/2Na1/2TiO3 Nanocrystals[J].Chemical Research In Chinese Universities,1999,20(4):515-518. |
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| Authors: | ZHANG Wei-Feng ZHANG Xing-Tang GUO Hong FANG Jiang-Lin ZHANG Ming-Sheng |
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| Institution: | 1. Department of Physics, Henan University, Kaifeng, 475001;
2. Center for Materials Analysis, Nanjing University, Nanjing, 210093 |
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| Abstract: | Quantum paraelectric La\-\{1/2\}Na\-\{1/2\}TiO\-3 nanocrystals have successfully been prepared by using improved sol\|gel method in which absolute alcohol and stearic acid were used as the solvent. X\|ray diffraction results show that the as\|prepared sample is a pure La\-\{1/2\}Na\-\{1/2\}TiO\-3 with an acubic perovskite\|type structure. The mean crystallite sizes were controlled by varying annealing temperatures. FTIR and Raman measurements reveal nano\|size effects on the vibration spectroscopic properties of the nanocrystalline La\-\{1/2\}Na\-\{1/2\}TiO\-3.\= |
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| Keywords: | La1/2Na1/2TiO3 |
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