Shear-Mode Piezoelectric Properties of KNbO3-Based Ferroelectric Ceramics

被引：24

作者：

Hikita, Kouhei ^{[1
]}

Hiruma, Yuji ^{[1
]}

Nagata, Hajime ^{[1
]}

Takenaka, Tadashi ^{[1
]}

机构：

[1] Tokyo Univ Sci, Fac Sci & Technol, Dept Elect Engn, Chiba 2788510, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2009年 / 48卷 / 07期

关键词：

ELECTRICAL-PROPERTIES;

D O I：

10.1143/JJAP.48.07GA05

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Potassium niobate, KNbO3, (KN)-based ceramics were prepared by a modified conventional ceramic fabrication process to characterize their piezoelectric properties. The KN-MnCO3 0.1 wt% (KN-Mn0.1) ceramic used in this study showed a high density ratio >96% and a high resistivity, rho, of about 10(13) Omega.cm without deliquescent properties. The shear mode of the KN-Mn0.1 ceramic showed excellent resonance and antiresonance characteristics with tiny spurious peaks upon optimization of the sample dimensions. The electromechanical coupling factor, k(15), and piezoelectric strain constant, d(15), of KN-Mn0.1 showed relatively large values of 0.55 and 207 pC/N, respectively. The shear-mode vibration of KN-based ceramics appears to be a very promising candidate for actuators and high-power applications. (C) 2009 The Japan Society of Applied Physics

引用

页数：5

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