| 0-3/1-3混合连通型铁电陶瓷-铁电聚合物的热释电性 |
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| 引用本文： | 姜胜林,仝金雨,刘栋,金学淼,邓传益,任伏龙. 0-3/1-3混合连通型铁电陶瓷-铁电聚合物的热释电性[J]. 复合材料学报, 2007, 24(4): 140-144 |
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| 作者姓名： | 姜胜林 仝金雨 刘栋 金学淼 邓传益 任伏龙 |
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| 作者单位： | 华中科技大学,电子科学与技术系,武汉,430074;华中科技大学,电子科学与技术系,武汉,430074;华中科技大学,电子科学与技术系,武汉,430074;华中科技大学,电子科学与技术系,武汉,430074;华中科技大学,电子科学与技术系,武汉,430074;华中科技大学,电子科学与技术系,武汉,430074 |
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| 基金项目： | 国家重点基础研究发展973计划（2004CB619300）;新世纪优秀人才支持计划（NCET-04-0703） |
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| 摘 要： | 推导出了0-3/1-3混合连通型铁电陶瓷-铁电聚合物的热释电系数表达式, 并详细讨论了陶瓷体积分数 v2和陶瓷颗粒粒径与膜厚比(G/t)分别对复合材料的热释电系数pc及pc/εc(εc为复合材料的介电常数)的影响。结果表明: 当G/t≥0.5时, 不同陶瓷体积分数复合材料的热释电系数pc均趋向于某个定值, 说明此时G/t对热释电系数的影响可忽略不计; 另外当陶瓷体积分数为0.1时, 随着G/t的增大, pc /εc出现一个极大值, 且当G/t=0.9时, pc /εc比纯PZT陶瓷的大8倍, 表明此条件为最佳工艺条件。而且, 在低陶瓷体积分数和低G/t比时, 理论曲线与实验数据符合较好。
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| 关 键 词： | 热释电效应 铁电陶瓷 复合材料 |
| 文章编号： | 1000-3851（2007）04-0140-05 |
| 收稿时间： | 2006-08-11 |
| 修稿时间： | 2007-01-24 |
Research on pyroelectric properties of ferroelectric ceramic- ferroelectric polymer 0-3/1-3 composites |
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| JIANG Shenglin,TONG Jinyu,LIU Dong,JIN Xuemiao,DENG Chuanyi,Ren Fulong. Research on pyroelectric properties of ferroelectric ceramic- ferroelectric polymer 0-3/1-3 composites[J]. Acta Materiae Compositae Sinica, 2007, 24(4): 140-144 |
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| Authors: | JIANG Shenglin TONG Jinyu LIU Dong JIN Xuemiao DENG Chuanyi Ren Fulong |
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| Affiliation: | Department of Electrics Science and Technology, Huazhong University of Science & Technology, Wuhan 430074, China |
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| Abstract: | An expression was derived for the pyroelectric coefficient of ferroelectric ceramic-ferroelectric polymer 0-3/1-3 composites; the influence of ceramic volume fraction v2 and the ratio of ceramic grain size to film thickness(G/t) on the pyroelectric coefficient(pc) and pc/ε c of ferroelectric composites is discussed. The results show that when G/t≥0.5, at different ceramic volume fractions v2, the pyroelectric coefficient tends to become constant. This means that the influence of G/t on the pyroelectric coefficient is neglectable. When ceramic volume fraction v2=0.1 and G/t increases, pc/εc will reach its maximum. When G/t=0.9, pc/εc of ferroelectric composites is 8 times larger than that of pure PZT ceramics. v2=0.1 and G/t=0.9 were the best technological condition. Additionally, theoretical curves and experimental data fit each other at low ceramic volume fractions and low G/t. |
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| Keywords: | pyroelectric effect ferroelectric ceramics composites |
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