Lead-Free Metamaterials with Enormous Apparent Piezoelectric Response

被引：66
|
作者：
Zhou, Wanfeng [1 ,2 ]
Chen, Pan [1 ,2 ]
Pan, Qi [1 ,2 ]
Zhang, Xiaotong [1 ,2 ]
Chu, Baojin [1 ,2 ,3 ]
机构：
[1] Univ Sci & Technol China, CAS Key Lab Mat Energy Convers, Hefei 230026, Anhui, Peoples R China
[2] Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
[3] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China
来源：
ADVANCED MATERIALS | 2015年 / 27卷 / 41期
基金：
中国国家自然科学基金;
关键词：
FREE PIEZOCERAMICS; CURIE-TEMPERATURE; FLEXOELECTRICITY; POLARIZATION; CERAMICS; TECHNOLOGY; ACTUATORS; REDUCTION; CRYSTALS; SOLIDS;
D O I：
10.1002/adma.201502562
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Lead-free flexoelectric piezoelectric metamaterials are created by applying an asymmetric chemical reduction to Na1/2Bi1/2TiO3-BaTiO3 ceramics. The reduction induces two gradient-generating mechanisms, curvature structure and chemical inhomogeneity, and enhances the flexoelectric effect. The ceramics behave like piezoelectric materials, exhibiting an enormous and high-temperature stable apparent piezoelectric response, outperforming existing lead-oxide-based piezoelectrics.
引用
收藏
页码：6349 / +
页数：8
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