Domain structures and piezoelectric properties of low-temperature sintered (Ba0.95Ca0.05)(Ti0.94Sn0.06)O3 ceramics with CuO additive

被引：10
作者：
Sun, Yuan [1 ,2 ]
Chang, Yunfei [1 ,2 ]
Wu, Jie [1 ,2 ]
Wang, Xiaohui [3 ,4 ]
Zhang, Shantao [5 ,6 ]
Wang, Ruixue [1 ,2 ]
Yang, Bin [1 ,2 ]
Cao, Wenwu [1 ,2 ,7 ,8 ]
机构：
[1] Harbin Inst Technol, Condensed Matter Sci & Technol Inst, Harbin 150080, Peoples R China
[2] Harbin Inst Technol, Sch Sci, Harbin 150080, Peoples R China
[3] Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
[4] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
[5] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
[6] Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China
[7] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA
[8] Penn State Univ, Dept Math, University Pk, PA 16802 USA
来源：
MATERIALS LETTERS | 2016年 / 177卷
基金：
中国国家自然科学基金;
关键词：
Electroceramics; Densification; Microstructure; Domain structure; Electrical properties;
D O I：
10.1016/j.matlet.2016.04.125
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
(Ba0.95Ca0.05)(Ti0.94Sn0.06)O-3-x mol% CuO ceramics were fabricated to investigate their domain structures and piezoelectric properties. The CuO additive significantly improved the densification behavior of the ceramics, resulting in a reduced sintering temperature by similar to 150 degrees C. Increasing x shifted the orthorhombic -tetragonal phase transition towards lower temperatures, and caused the specific ratio of tetragonal to orthorhombic phase to increase at room temperature. The herringbone domain patterns became much simpler and their number substantially decreased. The watermarks and parallel strips are the dominant domain configuration in ceramics with x=0.50 which show the optimum piezoelectric properties: d(33) similar to 516 pC/N, d(33) similar to 996 pC/N, k(p) similar to 0.42, and Q(m) similar to 352. The underlying physical mechanisms for the enhanced piezoelectricity in the CuO-doped ceramics were discussed. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：128 / 131
页数：4
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