Enhanced dielectric and piezoelectric properties in LiTaO3-doped lead-free (K,Na)NbO3 ceramics by optimizing sintering temperature

被引：58
|
作者：
Zhao, Pei [1 ]
Zhang, Bo-Ping [1 ]
Li, Jing-Feng [2 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
[2] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
来源：
SCRIPTA MATERIALIA | 2008年 / 58卷 / 06期
基金：
中国国家自然科学基金;
关键词：
dielectrics; lead-free; perovskites; electroceramics;
D O I：
10.1016/j.scriptamat.2007.10.028
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This paper reports the enhanced piezoelectric properties in [(Na0.535K0.480)(0.966)Li-0.058] (Nb0.90Ta0.10)O-3 ceramics sintered at 1075-1120 degrees C. Because of morphotropic phase boundary-like behavior achieved by altering the sintering temperature from 1090 to 1105 degrees C, the piezoelectric coefficient is enhanced to 268 pC/N, the highest value reported for the LiTaO3-doped (Na,K)NbO3 ceramics. The corresponding Curie temperature and remanent polarization reached 445 degrees C and 11.5 mu C cm(-2), respectively. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：429 / 432
页数：4
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