Phase transition and improved electrical performance of Ba0.85Ca0.15Zr0.1Ti0.9O3-Ca0.28Ba0.72Nb2O6 ceramics with high Curie temperature

被引：33
作者：
Chao, Xiaolian [1 ]
Wang, Juanjuan [2 ]
Liang, Pengfei [1 ]
Zhang, Ting [1 ]
Wei, Lingling [1 ]
Yang, Zupei [1 ]
机构：
[1] Shaanxi Normal Univ, Sch Mat Sci & Engn, Key Lab Macromol Sci Shaanxi Prov, Xian 710062, Shaanxi, Peoples R China
[2] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Shaanxi, Peoples R China
来源：
MATERIALS & DESIGN | 2016年 / 89卷
基金：
美国国家科学基金会;
关键词：
Electrical properties; Piezoelectricity; Ba0.85Ca0.15Zr0.1Ti0.9O3; Curie temperature; LEAD-FREE CERAMICS; PIEZOELECTRIC PROPERTIES; FERROELECTRIC PROPERTIES; MICROSTRUCTURE; CA;
D O I：
10.1016/j.matdes.2015.10.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To enhance the electrical properties and Curie temperature of lead-free piezoelectric materials, polycrystalline Ba0.83Ca0.15Zr0.1Ti0.9O3-xCa(0.28)Ba(0.72)Nb(2)O(6) (BCZT-xCBN) ceramics were synthesized by solid-state reaction. X-ray diffraction analysis of the ceramics revealed that the crystal structure changed from orthorhombic to tetragonal, with an increase in CBN content. The Curie temperature was improved from 91 degrees C to 98 degrees C and favorable electrical properties (d(33) similar to 590 pC/N, k(p) similar to 0.46) were obtained for the BCZT-0.2 mol% CBN ceramics, along with high remnant polarization (P-r = 12.5 mu C/cm(2)), and a low coercive field strength (E-c = 1.5 kV/cm). The ceramics also exhibited good dielectric temperature stability over a wide temperature range. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：465 / 469
页数：5
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