Giant strain in lead-free piezoceramics Bi0.5Na0.5TiO3-BaTiO3-K0.5Na0.5NbO3 system

被引：830

作者：

Zhang, Shan-Tao

Kounga, Alain Brice

Aulbach, Emil

Ehrenberg, Helmut

Roedel, Juergen

机构：

[1] Tech Univ Darmstadt, Inst Mat Sci, D-64287 Darmstadt, Germany

[2] Leibniz Inst Festkorper & Werksffforchung Dresden, IWF, D-01069 Dresden, Germany

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 11期

关键词：

D O I：

10.1063/1.2783200

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Piezoelectric actuators convert electrical into mechanical energy and are implemented for many large-scale applications such as piezoinjectors and ink jet printers. The performance of these devices is governed by the electric-field-induced strain. Here, the authors describe the development of a class of lead-free (0.94-x)Bi0.5Na0.5TiO3-0.06BaTiO(3)-xK(0.5)Na(0.5)NbO(3) ceramics. These can deliver a giant strain (0.45%) under both unipolar and bipolar field loadings, which is even higher than the strain obtained with established ferroelectric Pb(Zr,Ti)O-3 ceramics and is comparable to strains obtained in Pb-based antiferroelectrics.

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页数：3

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