Engineered domain configuration and piezoelectric energy harvesting in 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 single crystals

被引：13

作者：

Song, Hyun-Cheol ^{[2
]}

Kang, Chong-Yun ^{[2
]}

Yoon, Seok-Jin ^{[2
]}

Jeong, Dae-Yong ^{[1
]}

机构：

[1] Inha Univ, Sch Mat Engn, Inchon 402751, South Korea

[2] Korea Inst Sci & Technol, Elect Mat Ctr, Seoul 130650, South Korea

来源：

METALS AND MATERIALS INTERNATIONAL | 2012年 / 18卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

ferroelectric materials; crystal growth; domain; compression test; piezoelectric energy harvesting; TRANSDUCER; GENERATORS;

D O I：

10.1007/s12540-012-3018-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The performance of cantilever piezoelectric energy harvesters using three types of piezoelectric materials, relaxor ferroelectric 0.7Pb(Mg1/3Nb2/3)O-3-0.3PbTiO(3) (PMN-PT) single crystals oriented along the aOE (c) 110 > and aOE (c) 001 > directions, and a PZT-based ceramic, were investigated. The aOE (c) 110 > and aOE (c) 001 > oriented PMN-PT single crystals, which have a rhombohedral phase and spontaneous polarization along the aOE (c) 111 > direction, presented electromechanical coupling factor k (31)'s of 0.78 and 0.42, respectively. The cantilever-type energy harvester operated by 31 resonance mode generated a larger output power of 1.07 mW for the aOE (c) 110 > oriented PMN-PT single crystal compared to those of the other materials. The effective electromechanical coupling factor of the piezoelectric energy harvester with the aOE (c) 110 > oriented crystal also reached 0.25, not achievable with the other piezoelectric materials. These results demonstrate that the domain engineering of the piezoelectric single crystals can provide higher design flexibility for a tiny energy harvester.

引用

页码：499 / 503

页数：5

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