| 铌酸锂钠陶瓷的低温热释电性 |
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| 引用本文： | 王春雷,赵焕绥.铌酸锂钠陶瓷的低温热释电性[J].无机材料学报,1991,6(4):449-452. |
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| 作者姓名： | 王春雷 赵焕绥 |
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| 作者单位： | 山东大学物理系
(王春雷，张沛霖，钟维烈)，山东大学实验中心(赵焕绥) |
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| 摘 要： |
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| 关 键 词： | 铌酸锂钠 陶瓷 热释电性 相变 |
Low Temperature Pyroelectric Properties of Li_(0.06)Na_(0.94)NbO_3 Ceramics |
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| Wang Chunlei Zhang Peitin Zhong Weilie.Low Temperature Pyroelectric Properties of Li_(0.06)Na_(0.94)NbO_3 Ceramics[J].Journal of Inorganic Materials,1991,6(4):449-452. |
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| Authors: | Wang Chunlei Zhang Peitin Zhong Weilie |
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| Abstract: | Pyroelectric properties of Li_(0.06)Na_(0.94)NbO_3 ceramics have been investigated in thetemperature range from 300 K to 120 K.The anomalous behaviors of pyroelectricproperties in certain temperature interval are very similar to that of Li_xNa_(1-x)NbO_3crystals.This shows there is a low temperature phase transition with a large thermalhysteresis for Li_(0.06)Na_(0.94)NbO_3 ceramics (about 80K).The change of polarity duringphase transition causes the inversion of its pyroelectric coefficient in polarized direc-tion to the opposite sign.The pyroelectric time response has also been observed,theanomalous phenomenon of pyroelectric charge changing its polarity with time dur-ing phase transition is indicative of the co-existence of two phases.These resultsconfirm our study on Li_xNa_(1-x)NaO_3 crystals before to be correct. |
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| Keywords: | Lithium-sodium niobate ceramics Pyroelectric response Low temperature phase transition |
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