Dielectric and piezoelectric properties of Li-substituted lead-free (Bi0.5Na0.5)TiO3-(Bi0.5K0.5)TiO3-BaTiO3 ceramics

被引：11
|
作者：
Wang, L. [1 ]
Song, T. K. [1 ]
Lee, S. C. [1 ]
Cho, J. H. [1 ]
Sung, Y. S. [1 ]
Kim, M. -H. [1 ]
Choi, K. S. [2 ]
机构：
[1] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Chang Won 641773, Gyeongnam, South Korea
[2] Sunchon Natl Univ, Dept Phys Educ, Chungnam 540742, South Korea
来源：
CURRENT APPLIED PHYSICS | 2010年 / 10卷 / 04期
关键词：
Perovskites; Ferroelectrics; Piezoelectric materials; Dielectrics; FERROELECTRIC PROPERTIES; ELECTRICAL-PROPERTIES;
D O I：
10.1016/j.cap.2009.12.041
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Lead-free 0.79(Bi0.5Na0.5)TiO3-0.14[Bi-0.5(K-0.5 Li-x(x))]TiO3-0.07BaTiO(3) (BNBK79 + xLi, x = 0.0, 0.1, 0.2, 0.25, 0.3, and 0.4) ceramics were prepared by conventional solid state reaction process. The crystalline structures and surface morphologies are investigated by X-ray diffraction method and scanning electron microscopy. Dielectric and piezoelectric properties were measured. With increasing of lithium substitution, the Curie temperatures of BNBK79 + xLi ceramics increase, but the maximum value of the dielectric constant decreases. And a relatively large remnant polarization of 17.6 mu C/cm(2) and 157 pC/N of d(33) has been obtained when x = 0.3. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：1059 / 1061
页数：3
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