Piezoelectric properties of K4CuNb8O23 modified (Na0.5K0.5)NbO3 lead-free piezoceramics

被引：40

作者：

Chen, Qiang

Chen, Lin

Li, Qishou

Yue, Xi

Xiao, Dingquan

Zhu, Jianguo ^{[1
]}

Shi, Xiaoluo

Liu, Zhiqian

机构：

[1] Sichuan Univ, Coll Mat Sci & Engn, Chengdu 610064, Peoples R China

[2] Hunan Jiayeda Elect Co Ltd, Hunan 530000, Li County, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2007年 / 102卷 / 10期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2815498

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Dense K4CuNb8O23 modified (Na0.5K0.5)NbO3 (NKN:KCN) ceramics were synthesized by using conventional oxide mixing process. The maximum mechanical quality factor Q(m) of NKN:KCN ceramics reaches up to 1150, the piezoelectric constant d(33) and the planar electromechanical coefficient k(p) still maintain relatively high levels, which are about 100 pC/N and 40%, respectively. Middle frequency (455 kHz) lead-free resonators were fabricated by using NKN:KCN, and remarkable improvements in resonance characteristics were found by KCN doping. (c) 2007 American Institute of Physics.

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页数：4

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