| 非晶钛酸铋的晶化过程 |
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| 引用本文： | 徐国成,潘玲,关庆丰,邹广田. 非晶钛酸铋的晶化过程[J]. 物理学报, 2006, 55(6): 3080-3085 |
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| 作者姓名： | 徐国成 潘玲 关庆丰 邹广田 |
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| 作者单位： | 吉林大学材料科学与工程学院，超硬材料国家重点实验室,长春 130025 |
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| 摘 要： | 利用差热分析、X射线衍射和透射电子显微镜等技术对溶胶-凝胶法合成的凝胶的晶化过程进行了分析，实验结果表明，Bi4Ti3O12非晶凝胶晶化过程经历了四个过程：首先在433℃先形成了Bi2O3和TiO2亚稳相，然后在488℃时TiO2亚稳相与Bi2O3反应形成Bi，Ti复合氧化物亚稳相Bi2T关键词：钛酸铋铁电材料溶胶凝胶非晶晶化过程
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| 关 键 词： | 钛酸铋 铁电材料 溶胶凝胶 非晶 晶化过程 |
| 文章编号： | 1000-3290/2006/55（06）/3080-06 |
| 收稿时间： | 2005-11-21 |
| 修稿时间： | 2005-11-212005-12-15 |
Crystallization of amorphous bismuth titanate |
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| Xu Guo-Cheng,Pan Ling,Guan Qing-Feng,Zou Guang-Tian. Crystallization of amorphous bismuth titanate[J]. Acta Physica Sinica, 2006, 55(6): 3080-3085 |
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| Authors: | Xu Guo-Cheng Pan Ling Guan Qing-Feng Zou Guang-Tian |
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| Affiliation: | College of Materiasl Science and Engineering, State Key Laboratory of Superhard Materials, Jilin University, Changchun 130025, China |
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| Abstract: | The phase transformation of amorphous bismuth titanate fabricated by sol-gel method was investigated by X-ray diffraction (XRD), transmissions electron microscopy (TEM) and differential thermal analysis (DTA). The experimental results show that the four-step crystallizations were present on heating. The metastable phases Bi2O3 and TiO2 were formed firstly at 433℃, and Bi2Ti4O11 phase was subsequently formed at 488℃ by the reaction between Bi2O3 and TiO2. Sequential reaction between Bi2Ti4O11 and Bi2O3 resultedin the formation of Bi4Ti3O12 phase with tetragonal structure at about 644℃, and stable Bi4Ti3O12 phase with orthorhombic structure was finally formed at about 830℃. |
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| Keywords: | bismuth titanate ferroelectric material sol-gel amorphous crystallization behavior |
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