| 低温下铌酸锂钠陶瓷的热释电性与弹性研究 |
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| 引用本文： | 艾树涛,王春雷,张沛霖,赵明磊,杜爱军.低温下铌酸锂钠陶瓷的热释电性与弹性研究[J].压电与声光,2001,23(2):145-147. |
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| 作者姓名： | 艾树涛 王春雷 张沛霖 赵明磊 杜爱军 |
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| 作者单位： | 1. 山东大学物理系,
2. 复旦大学现代物理研究所, |
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| 摘 要： | 在120～320K的温度范围内研究了锂酸锂钠陶瓷的热释电性与弹性，其热释电行为与弹性行为在低温区域内显著反常，表明该陶瓷存在低温铁电-铁电相变。观测到极化方向的热释电系数改变符号及热释电电荷随时间改变极性的现象，弹性变化与次级压电效应是相关的。
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| 关 键 词： | 铌酸锂钠陶瓷 热释电性 弹性 |
| 文章编号： | 1004-2474(2001)02-0145-03 |
| 修稿时间： | 2000年10月10 |
Study on Low Temperature Pyroelectric and Elastic Properties of Li_(0.06)Na_(0.94)NbO_3 Ceramics |
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| AI SHU-TAO,WANG Chun-lei,ZHANG Pei-lin,ZHAO Ming-lei,DU Ai-jun.Study on Low Temperature Pyroelectric and Elastic Properties of Li_(0.06)Na_(0.94)NbO_3 Ceramics[J].Piezoelectrics & Acoustooptics,2001,23(2):145-147. |
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| Authors: | AI SHU-TAO WANG Chun-lei ZHANG Pei-lin ZHAO Ming-lei DU Ai-jun |
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| Abstract: | Pyroelectric and elastic properties of Li0.06Na0.94NbO3 ceramics have been investigated in the temperature range from 120～320 K.Its pyroelectric and elastic properties behave anomalously in certain low temperature intervals.This shows there is a low temperature ferroelectric phase transition in Li0.06Na0.94NbO3 ceramics.The inversion of its pyroelectric coefficient in polarized direction to the opposite sign and the change of the polarity of pyroelectric charge with time during phase transtion have been observed.The evolution of elastic properties is connected with the secondary piezoelectric effect. |
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| Keywords: | Li 006Na 094NbO 3 ceramics pyroelectricity elasticity ferroelectric phase transition secondary piezoelectric effect |
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