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The structural origin of enhanced piezoelectric performance and stability in lead free ceramics†
Zheng, Ting1; Wu, Haijun2; Yuan, Yuan1,1; Lv, Xiang1; Li, Qi3; Men, Tianlu3; Zhao, Chunlin1; Xiao, Dingquan1; Wu, Jiagang1; Wang, Ke3; Li, Jing-Feng3; Gu, Yueliang4; Zhu, Jianguo1; Pennycook, Stephen J.2
2017
发表期刊Energy and Environmental Science
ISSN17545692
卷号10期号:2页码:528-537
摘要Lead-based piezoelectric materials are currently facing global restrictions due to their lead toxicity. Thus it is urgent to develop lead-free substitutes with high piezoelectricity and temperature stability, among which, potassium-sodium niobate [(K,Na)NbO3, KNN] has the most potential. It is very difficult to simultaneously achieve high piezoelectric performance and reliable stability in KNN-based systems. In particular, the structural/physical origin for their high piezoelectricity is still unclear, which hinders property optimization. Here we report the achievement of high temperature stability (less than 10% variation for electric field-induced strain from 27 8C to 80 8C), good fatigue properties (stable up to 106cycles) as well as an enhanced piezoelectric coefficient (d33) of 525 pC N1in (1 x)(K1yNay)(Nb1zSbz)O3–xBi0.5(Na1wKw)0.5HfO3(KNNS–BNKH) ceramics through manipulating the rhombohedral–tetragonal (R–T) phase boundary. The structural origin of their high piezoelectric performance can be attributed to a hierarchical nanodomain architecture, where the local structure inside nanodomains comprises R and T nanotwins. The physical origin can be attributed to low domain wall energy and nearly vanishing polarization anisotropy, facilitating easy polarization rotation among different states. We believe that the new breakthrough will open a window for the practical applications of KNN-based ceramics. © The Royal Society of Chemistry 2017.
DOI10.1039/c6ee03597c
EI入藏号20181104907295
EI主题词Piezoelectricity
EI分类号701.1 Electricity: Basic Concepts and Phenomena - 812.1 Ceramics - 933.1 Crystalline Solids
引用统计
文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25539
专题中国科学院上海硅酸盐研究所
作者单位1.Department of Materials Science, Sichuan University, Chengdu; 610064, China;
2.Department of Materials Science and Engineering, National University of Singapore, 117575, Singapore;
3.State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing; 100084, China;
4.Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Pudong New Area, Shanghai; 201204, China
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Zheng, Ting,Wu, Haijun,Yuan, Yuan,等. The structural origin of enhanced piezoelectric performance and stability in lead free ceramics†[J]. Energy and Environmental Science,2017,10(2):528-537.
APA Zheng, Ting.,Wu, Haijun.,Yuan, Yuan.,Lv, Xiang.,Li, Qi.,...&Pennycook, Stephen J..(2017).The structural origin of enhanced piezoelectric performance and stability in lead free ceramics†.Energy and Environmental Science,10(2),528-537.
MLA Zheng, Ting,et al."The structural origin of enhanced piezoelectric performance and stability in lead free ceramics†".Energy and Environmental Science 10.2(2017):528-537.
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