| A位复合铁电陶瓷BNT-BKT-BiCoO3的介电特性 |
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| 引用本文： | 成钧,周沁,周昌荣,岑侦勇,杨华斌,李伟洲.A位复合铁电陶瓷BNT-BKT-BiCoO3的介电特性[J].人工晶体学报,2010,39(2):511-515. |
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| 作者姓名： | 成钧 周沁 周昌荣 岑侦勇 杨华斌 李伟洲 |
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| 作者单位： | 桂林电子科技大学广西信息材料重点实验室,桂林,541004;广西大学材料科学与工程学院,南宁,530004 |
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| 基金项目： | 广西自然科学基金重点项目，广西自然科学基金，国家级大学生创新性实验项目 |
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| 摘 要： | 采用传统陶瓷制备工艺,制备了一种A位复合铁电陶瓷(1-x-y)BNT-xBKT-yBiCoO3,并研究了该体系陶瓷的介电性能与成分的关系以及介电性能随频率的变化规律.结果表明:所研究的组成极化后的介电常数低于极化前.极化前的介电常数和介电损耗随BiCoO3含量的增加而下降,极化前和极化后的介电常数和介电损耗都随BKT含量的增加而增加.介电常数随频率增加而降低,但降低趋势随频率增加而减慢.随BiCoO3含量的增加,在低频陶瓷介电损耗随频率的增加先降低后增加.
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| 关 键 词： | 钛酸铋钠 介电性能 钙钛矿结构 铁电体 |
Dielectric Properties of A Site Complex Ferroelectric Ceramics BNT-BKT-BiCoO_3 |
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| CHENG Jun,ZHOU Qin,ZHOU Chang-rong,CEN Zhen-yong,YANG Hua-bin,LI Wei-zhou.Dielectric Properties of A Site Complex Ferroelectric Ceramics BNT-BKT-BiCoO_3[J].Journal of Synthetic Crystals,2010,39(2):511-515. |
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| Authors: | CHENG Jun ZHOU Qin ZHOU Chang-rong CEN Zhen-yong YANG Hua-bin LI Wei-zhou |
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| Institution: | CHENG Jun1,ZHOU Qin1,ZHOU Chang-rong1,CEN Zhen-yong1,YANG Hua-bin1,LI Wei-zhou2(1.Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guilin 541004,China,2.School of Material Science , Engineering,Guangxi University,Nanning 530004,China) |
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| Abstract: | A new A site complex lead-free ferroelectric ceramics of(1-x-y)BNT-xBKT-yBiCoO3 was prepared by a conventional ceramic sintering technique.The relation between composition and dielectric properties,dielectric properties and frequency were investigated.It was found that the dielectric constant and dielectric loss of unpoled samples is higher that those of poled samples.The dielectric constant and dielectric loss of unpoled samples decrease with the increase content of BiCoO3.The dielectric constant and diele... |
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| Keywords: | sodium bismuth titanate dielectric properties perovskites structure ferroelectrics |
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