Microstructure, Dielectric and Piezoelectric Properties of (Na, K, Li)(Nb,Sb)O3-(Bi, Na)ZrO3Ceramics for Piezoelectric Speaker

被引：2

作者：

Yoo, Ju-Hyun ^{[1
]}

Choi, Jae Seung ^{[1
]}

机构：

[1] Semyung Univ, Dept Elect Engn, Jecheon, South Korea

来源：

INTEGRATED FERROELECTRICS | 2020年 / 211卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

Rhombohedral-Tetragonal (R-T) region; (NaK)NbO3; Iron oxide; Piezoelectric speaker; Piezoelectric constant(d(33)); CERAMICS;

D O I：

10.1080/10584587.2020.1803682

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Nowadays, piezoelectric speakers have been actively studied for the applications to smartphone, TV monitor, and car audio system. Accordingly, for developing the piezoelectric speaker composition ceramics, in this paper, (Na,K,Li)(Nb,Sb)O-3-(Bi,Na)ZrO(3)ceramics with Rhombohedral-Tetragonal (R-T) region were fabricated with iron oxide addition, and their piezoelectric characteristics were investigated. When iron oxide was added to the ceramics, d(33)and k(p)were decreased. However, Q(m)was increased. At the NKN-BNZ ceramics with 0.1 wt% iron oxide. The piezoelectric constant d(33), electromechanical coupling factor kp, and dielectric constant epsilon(r)were optimized as 263[pC/N], 0.450, 1978, respectively, for piezoelectric speaker application.

引用

页码：152 / 159

页数：8

共 8 条

[1]

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