| Na1/2Bi1/2TiO3-BaTiO3系陶瓷压电性及弛豫相变研究 |
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| 引用本文： | 初宝进,李国荣,江向平,陈大任.Na1/2Bi1/2TiO3-BaTiO3系陶瓷压电性及弛豫相变研究[J].无机材料学报,2000,15(5):815-821. |
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| 作者姓名： | 初宝进 李国荣 江向平 陈大任 |
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| 作者单位： | 初宝进（中国科学院上海硅酸盐研究所无机功能材料开放实验室，上海
200050）;李国荣（中国科学院上海硅酸盐研究所无机功能材料开放实验室，上海
200050）;江向平（中国科学院上海硅酸盐研究所无机功能材料开放实验室，上海
200050）;陈大任（中国科学院上海硅酸盐研究所无机功能材料开放实验室，上海
200050） |
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| 摘 要： | 系统研究了（１－ｘ）Ｎａ１／２Ｂｉ１／２ＴｉＯ３－ｘＢａＴｉＯ３（ｘ＝０．０２、０．０４、０．０６、０．０８、０．１０）无铅压电陶瓷系统的相界、材料压电性能、驰豫特性及相变。这个系统的陶瓷材料具有Ｋｔ／Ｋｐ较大，频率常数比较高等特点，Ｘ－ｒａｙ衍射结构分析发现此系统的相界在０．０４〈ｘ〈０．０６之间；材料的一些主要性能在相界附近达到极值。利用介电系数－温度曲线，并结合热激电流曲线对此系统的驰豫性进
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| 关 键 词： | 压电陶瓷 准同型相界 钛酸钡 驰豫性相变 NBT |
| 文章编号： | 1000-324X(2000)05-0815-07 |
| 收稿时间： | 1999-10-22 |
| 修稿时间： | 1999年10月22 |
Piezoelectric Property and Relaxation Phase Transition of Na1/2Bi1/2TiO3-BaTiO3 System |
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| CHU Ban-Jin,LI Guo-Rong,JIANG Xiang-Ping,CHEN Da-Ren.Piezoelectric Property and Relaxation Phase Transition of Na1/2Bi1/2TiO3-BaTiO3 System[J].Journal of Inorganic Materials,2000,15(5):815-821. |
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| Authors: | CHU Ban-Jin LI Guo-Rong JIANG Xiang-Ping CHEN Da-Ren |
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| Affiliation: | LaboratoryofFunctionalInorganicMaterials;ShanghaiInstituteofCeramics;ChineseAcademyofSciences;Shanghai200050;China |
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| Abstract: | For (1-x)Na1/2Bi1/2TiO3xBaTiO3(x=0.02, 0.04, 0.06, 0.08, 0.10) lead-free ceramic system the morphotropic boundary, piezoelectric property, relaxation property and phase transition were investigated. The piezoelectric ceramics of this system possess large ratios of Kt/Kp and high frequency constants. According to XRD patterns, the morphotropic boundary lies in the composition range of 0.04<x<0.06. The main physical properties of this system can reach extreme values near the morphotropic boundary. The relaxation property of this system was studied by using dielectric constant-temperature curves and thermally stimulated depolarization current (TSDC) curves. Phase transition from ferroelectric to paraelectric phase was also primarily discussed and it was found out that the ceramics within a composition range possess transitional phase region between ferroelectric phase and paraelectric phase. |
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| Keywords: | (1-x)Na1/2Bi1/2TiO3-xBaTiO3 lead-free piezoelectric ceramics morphotropic boundary relaxation phase transition transitional phase region |
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