Lead-Free Metamaterials with Enormous Apparent Piezoelectric Response

被引：69

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

页码：6349 / +

页数：8

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