Effect of Pre-calcined Method on Dielectric, Ferroelectric, and Piezoelectric Properties of Lead-Free Piezoelectric Lix(K0.5Na0.5)1-x(Nb0.8Ta0.2)O3 Ceramics

被引：0
|
作者：
Kuan, Min-Chang [1 ]
Chen, Kai-Huang [1 ]
Cheng, Chien-Min [2 ]
Lin, Chun-Cheng [3 ]
Chen, Shih-Fang [2 ]
机构：
[1] Tung Fang Design Univ, Dept Elect Engn & Comp Sci, Kaohsiung, Taiwan
[2] Southern Taiwan Univ, Dept Elect Engn, Tainan, Taiwan
[3] Chinese Air Force Acad, Dept Math & Phys, Kaohsiung, Taiwan
来源：
HIGH-PERFORMANCE CERAMICS VII, PTS 1 AND 2 | 2012年 / 512-515卷
关键词：
KNN-based; lead-free; ferroelectric properties; electromechanical coupling factors (kp);
D O I：
10.4028/www.scientific.net/KEM.512-515.1218
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The structure and electrical characteristics of the lead-free Li-x(K0.5Na0.5)(1-x)(Nb0.8Ta0.2)O-3 (x=0 similar to 0.05) piezoelectric ceramics for the conventional solid-state reaction method and the B-site pre-calcined method were achieved and compared. For the B-site pre-calcined method, the lead-free ceramic material exhibited the excellent electrical and piezoelectric properties. The relative dielectric constant (epsilon(r)) and loss (tan delta) of the Li-x(K0.5Na0.5)(1-x)(Nb0.8Ta0.2)O-3 for x=0.03 using the B-site pre-calcined method were 1223 and 0.021, respectively. In addition, the electromechanical coupling factors (k(p)) and Curie temperature (T-C) was 48.5 % and 315 degrees C. Finally, the electrical properties of the lead-free Li-x(K0.5Na0.5)(1-x)(Nb0.8Ta0.2)O-3 (x=0 similar to 0.05) homogeneity ceramics improved by the B-site pre-calcined method were also investigated and discussed.
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页码：1218 / +
页数：2
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