Effects of CuO doping on the electrical properties of 0.98K0.5Na0.5NbO3-0.02BiScO3 lead-free piezoelectric ceramics

被引：23
作者：
Liu, Jing [1 ]
Zhu, Jiliang [1 ]
Li, Xuhai [1 ]
Wang, Mingsong [1 ]
Zhu, Xiaohong [1 ]
Zhu, Jianguo [1 ]
Xiao, Dingquan [1 ]
机构：
[1] Sichuan Univ, Dept Mat Sci, Chengdu 610064, Peoples R China
来源：
MATERIALS LETTERS | 2011年 / 65卷 / 06期
基金：
美国国家科学基金会;
关键词：
CuO doped; Ceramics; Electrical properties; Mechanical quality factor; SINTERING TEMPERATURE;
D O I：
10.1016/j.matlet.2010.12.058
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
CuO-doped 0.98K(0.5)Na(0.5)NbO(3)-0.02BiScO(3) (0.98KNN-0.02BS-xCu) lead-free piezoelectric ceramics have been fabricated by ordinary sintering technique. The effects of CuO doping on the dielectric, piezoelectric, and ferroelectric properties of the ceramics were mainly investigated. X-ray diffraction reveals that the samples at doping levels of x <= 0.01 possess a pure tetragonal perovskite structure. The specimen doped with 1 mol% CuO exhibits enhanced electrical properties (d(33)similar to 207 pC/N, k(p)similar to 0.421, and k(t)=0.424) and relatively high mechanical quality factor (Q(m)=288). These results indicate that the 0.98KNN-0.02BS-0.01Cu ceramic is a promising candidate for lead-free piezoelectric ceramics for applications such as piezoelectric actuators, harmonic oscillator and so on. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：948 / 950
页数：3
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