Phase formation and electrical properties of BNLT-BZT lead-free piezoelectric ceramic system

被引：60

作者：

Kantha, P. ^{[1
]}

Pengpat, K. ^{[1
]}

Jarupoom, P. ^{[1
]}

Intatha, U. ^{[2
]}

Rujijanagul, G. ^{[1
]}

Tunkasiri, T. ^{[1
]}

机构：

[1] Chiang Mai Univ, Fac Sci, Dept Phys, Chiang Mai 50202, Thailand

[2] Mae Fah Luang Univ, Sch Sci, Chiang Rai 57000, Thailand

来源：

CURRENT APPLIED PHYSICS | 2009年 / 9卷 / 02期

关键词：

BNLT; BZT; Lead-free piezoelectric ceramic; Two step mixed-oxide method; BOUNDARY;

D O I：

10.1016/j.cap.2008.04.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Phase formation study in lead-free piezoelectric ceramics based on lanthanum doped bismuth sodium titanate (Bi0.4871Na0.4871-La0.0172TiO3:BNLT) and zirconium doped barium titanate (BaZr0.05Ti0.95O3:BZT), has been carried out in the system of (1-x)BNLT-xBZT where x = 0.0-1.0, by two-step mixed oxide method. It was observed that the addition of BZT in the BNLT ceramics developed the dielectric and piezoelectric properties of the ceramics with the optimum piezoelectric constant (d(33)) and dielectric constant (epsilon(r)) at room temperature of about 138 pC/N and 1651, respectively, from the 0.2 BNLT to 0.8 BZT ceramic sample. The Curie temperature (T-C) of this ceramic was found at 295 degrees C which is 195 degrees C higher than that of pure BZT ceramics, promising the use of this ceramic in a higher range of temperature. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：460 / 466

页数：7

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