Structure and electrical properties of Li-doped BaTiO3-CaTiO3-BaZrO3 lead-free ceramics prepared by citrate method

被引：56

作者：

Liu, Xing ^{[1
]}

Zhu, Min ^{[1
]}

Chen, Zhihui ^{[1
]}

Fang, Bijun ^{[1
]}

Ding, Jianning ^{[1
,2
]}

Zhao, Xiangyong ^{[3
]}

Xu, Haiqing ^{[3
]}

Luo, Haosu ^{[3
]}

机构：

[1] Changzhou Univ, Sch Mat Sci & Engn, Jiangsu Collaborat Innovat Ctr Photovolat Sci & E, Changzhou 213164, Jiangsu, Peoples R China

[2] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Jiangsu, Peoples R China

[3] Chinese Acad Sci, Key Lab Inorgan Funct Mat & Device, Shanghai 201800, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 613卷

基金：

中国国家自然科学基金;

关键词：

BaTiO3-based ceramics; Citrate method; Doping; Perovskite structure; Electrical properties; HIGH PIEZOELECTRIC COEFFICIENT; SINTERING TEMPERATURE; D(33);

D O I：

10.1016/j.jallcom.2014.06.046

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

1 wt% Li-doped 0.75BaTiO(3)-0.15CaTiO(3)-0.1BaZrO(3) (BCZT) ceramics were prepared by the citrate method. XRD measurement showed that pure perovskite BCZT precursor powders are obtained calcined at 600-700 degrees C, which exhibit rather homogeneous microstructure morphology with nm-scale grain size. The sintered BCZT ceramics exhibit pure perovskite structure with composition locating at rhombohedral side around the morphotropic phase boundary (MPB). Oxide doping and citrate method exert great influences on microstructure and electrical properties of the Li-doped BCZT ceramics. All the synthesized ceramics exhibit excellent dielectric and ferroelectric properties. The Li-doped BCZT ceramics calcined at 700 degrees C and sintered at 1500 degrees C exhibit the best dielectric, ferroelectric and piezoelectric properties. The high piezoelectric response of the synthesized Li-doped BCZT ceramics is considered as relating to the MPB effect, Li-doping and wet chemical synthesis method. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：219 / 225

页数：7

共 27 条

[1] ELASTIC, PIEZOELECTRIC, AND DIELECTRIC CONSTANTS OF POLARIZED BARIUM TITANATE CERAMICS AND SOME APPLICATIONS OF THE PIEZOELECTRIC EQUATIONS [J].