Relaxor effect on electric field induced large strain in (1-x)(Bi0.5Na0.5) TiO3-xBaTiO3 lead-free piezoceramics

被引：18

作者：

Chen, Pin-Yi ^{[1
]}

Chen, Cheng-Sao ^{[2
]}

Tu, Chi-Shun ^{[3
]}

Cheng, Chun-Der ^{[1
]}

Cherng, Jyh-Shiarn ^{[4
]}

机构：

[1] Ming Chi Univ Technol, Dept Mech Engn, New Taipei City 24301, Taiwan

[2] Hwa Hsia Inst Technol, Dept Mech Engn, New Taipei City 23567, Taiwan

[3] Fu Jen Catholic Univ, Grad Inst Appl Sci & Engn, New Taipei City 24205, Taiwan

[4] Ming Chi Univ Technol, Dept Mat Engn, New Taipei City 24301, Taiwan

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 04期

关键词：

Lead-free piezoceramics; Relaxor; Phase transition; Electric-induced strain; PHASE-TRANSITIONS; NA0.5BI0.5TIO3; TEMPERATURE; BEHAVIOR; TEM;

D O I：

10.1016/j.ceramint.2013.11.065

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Structures, strain, polarization, and dielectric permittivity of lead-free piezoceramics (1-x)(Bi0.5Na0.5)TiO3 xBaTiO(3) for x=0.03, 0.07, and 0.11 (abbreviated as BNB3T, BNB7T, and BNB 11T) have been investigated systematically as functions of electric (E) field and temperature. The results revealed that the piezoelectric behavior was significantly influenced by the domain configuration which depends on composition, E field, and lattice structure. The E-field induced strain in BNB7T composition can reach S-max/E-max=475 pm/V, which is comparable with the soft Pb(Zr,Ti)O-3 (PZT) piezoceramics. The large field-induced strain is likely originated from the development of the nano-polar regions (or clusters) with sizes of similar to 5-10 nm, which could reduce the energy barriers of dipole reorientation (or switching) under E-field application. (C) 2013 Elsevier Ltd and Techna Group Sid. All rights reserved.

引用

页码：6137 / 6142

页数：6

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