Na/K RATIOS DEPENDENCE OF PIEZOELECTRIC AND FERROELECTRIC PROPERTIES IN (K1-xNax)NbO3 LEAD-FREE CERAMICS

被引：3

作者：

Du, Hongliang ^{[1
]}

Qu, Shaobo ^{[1
]}

Xu, Zhuo ^{[2
]}

Wei, Xiaoyong ^{[2
]}

Zhou, Wancheng ^{[3
]}

Zhu, Dongmei ^{[3
]}

Fa, Luo ^{[3
]}

机构：

[1] Air Force Engn Univ, Coll Sci, Xian 710051, Shaanxi, Peoples R China

[2] Xi An Jiao Tong Univ, Key Lab, Educ Minist, Elect Mat Res Lab, Xian 710049, Shaanxi, Peoples R China

[3] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China

来源：

JOURNAL OF ADVANCED DIELECTRICS | 2011年 / 1卷 / 04期

关键词：

Lead free; piezoelectric ceramics; piezoelectric properties; morphotropic phase boundary;

D O I：

10.1142/S2010135X11000598

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In order to clarify the Na/K ratios dependence of piezoelectric properties, (K1-xNaxNbO3 ceramics were prepared by conventional solid-state sintering at x = 0: 4-0.6 with a smaller compositional interval (0.02 mol). The results demonstrate that the Na/K ratios have obvious erect on piezoelectric and ferroelectric properties of (K(1-x)Nax)NbO3 ceramics. Piezoelectric and ferroelectric properties show the maximum (d(33) = 147 pC/N, k(p) = 0: 40, and P-r = 24 mu C/cm(2)) at x = 0: 54, which is not consistent with conventional viewpoint. The reasons should be attributed to the existence of a phase boundary at x = 0: 54 mol, which is similar to the morphotropic phase boundary in Pb(Zr, Ti) O-3 ceramics.

引用

页码：471 / 478

页数：8

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