| 熔盐法合成LiTaO3粉体 |
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| 引用本文： | 李立宏,邢献然,陈骏,蔡宗英,邓金侠,孙策,刘桂荣.熔盐法合成LiTaO3粉体[J].无机化学学报,2006,22(8):1491-1494. |
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| 作者姓名： | 李立宏 邢献然 陈骏 蔡宗英 邓金侠 孙策 刘桂荣 |
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| 作者单位： | 北京科技大学理化系,北京,100083 |
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| 基金项目： | 国家自然科学基金;教育部人才基金TRAPOYT资助项目 |
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| 摘 要： | LiTaO3由于其突出的电光、压电和热释电效应,以及居里温度高、介电常数低,介电损耗小、老化速率低等特点,已成为广泛应用的功能材料1,2]。而且,LiTaO3还可以与其他陶瓷材料如(K0.5Na0.5)NbO3等复合制成新型压电陶瓷3]。另外,与陶瓷材料PZT相比较,该种压电材料不含铅,不会造成环境污染,属环境协调性绿色材料。LiTaO3的熔点很高(1630℃)4],目前合成这类材料的常规方法有固相法、质子交换法和溶胶-凝胶法等5￣9]。其中固相法采用Li2O和Ta2O5为原料,高温煅烧(往往高于1000℃),由于Li2O在高温下易挥发,使化学计量比较难控制6],且在…
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| 关 键 词： | 熔盐法(MSS) LiTaO3 晶体形貌 |
| 文章编号： | 1001-4861（2006）08-1491-04 |
| 收稿时间： | 2006-06-15 |
| 修稿时间： | 2006-07-21 |
LiTaO3 Powder Synthesis by Molten Salt Method |
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| LI Li-Hong,XING Xian-Ran,CHEN Jun,CAI Zong-Ying,DENG Jin-Xi,SUN Ce and LIU Gui-Rong.LiTaO3 Powder Synthesis by Molten Salt Method[J].Chinese Journal of Inorganic Chemistry,2006,22(8):1491-1494. |
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| Authors: | LI Li-Hong XING Xian-Ran CHEN Jun CAI Zong-Ying DENG Jin-Xi SUN Ce and LIU Gui-Rong |
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| Institution: | Department of Physical Chemistry, University of Science & Technology Beijing, Beijing 100083,Department of Physical Chemistry, University of Science & Technology Beijing, Beijing 100083,Department of Physical Chemistry, University of Science & Technology Beijing, Beijing 100083,Department of Physical Chemistry, University of Science & Technology Beijing, Beijing 100083,Department of Physical Chemistry, University of Science & Technology Beijing, Beijing 100083,Department of Physical Chemistry, University of Science & Technology Beijing, Beijing 100083 and Department of Physical Chemistry, University of Science & Technology Beijing, Beijing 100083 |
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| Abstract: | Pure lithium tantalite ceramic powders were synthesized by a molten salt method with Li2CO3 and Ta2O5 as reactants and LiCl as flux. The products were characterized by DSC, XRD and SEM techniques. The results show that the pure LiTaO3 powder is rhombohedral system with space group of R3c. The particle sizes are influenced by the synthesis temperature. The particle size increases with reaction temperature. |
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| Keywords: | molten salt synthesis (MSS) LiTaO3 crystal morphology |
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