Current Development in Lead-Free Bi0.5(Na,K)0.5TiO3-Based Piezoelectric Materials

被引：92

作者：

Ngo Duc Quan ^{[1
,2
]}

Luong Huu Bac ^{[3
]}

Duong Van Thiet ^{[1
]}

Vu Ngoc Hung ^{[2
]}

Dang Duc Dung ^{[1
]}

机构：

[1] Hanoi Univ Sci & Technol, Sch Engn Phys, Dept Gen Phys, 1 Dai Co Viet Rd, Hanoi, Vietnam

[2] Hanoi Univ Sci & Technol, ITIMS, Hanoi, Vietnam

[3] Hanoi Univ Sci & Technol, Sch Engn Phys, Dept Opt & Optoelect, Hanoi, Vietnam

来源：

ADVANCES IN MATERIALS SCIENCE AND ENGINEERING | 2014年 / 2014卷

关键词：

FIELD-INDUCED STRAIN; FREE BI-1/2(NA0.82K0.18)(1/2)TIO3 CERAMICS; ELECTRICAL-PROPERTIES; DIELECTRIC-PROPERTIES; FERROELECTRIC PROPERTIES; PHASE-TRANSITIONS; FREE PIEZOCERAMICS; GIANT STRAIN; ELECTROMECHANICAL RESPONSE; X-RAY;

D O I：

10.1155/2014/365391

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The lead-free piezoelectric ceramics display good piezoelectric properties which are comparable with Pb(Zr, Ti)O-3 (PZT) and these materials overcome the hazard to the environment and human health. The Bi-0.5(Na,K)(0.5)TiO3 (BNKT) is rapidly developed because of good piezoelectric, ferroelectric, and dielectric properties compared to PZT. The origin of giant strain of BNKT piezoelectric materials was found at morphotropic phase boundary due to crystal change from tetragonal to orthorhombic and/or precipitation of cubic phases, in addition to domain switching mechanism. The dopants or secondary phases with ABO(3) structure as solid solution are expected to change the crystal structure and create the vacancies which results in enhancement of the piezoelectric properties. In this work, we reviewed the current development of BNKT by dopants and secondary phase as solid solution. Our discussion will focus on role of dopants and secondary phase to piezoelectric properties of BNKT. This result will open the direction to control the properties of lead-free piezoelectric materials.

引用

页数：13

共 132 条

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