Bi0.5Na0.5TiO3-SrTiO3 lead-free piezoelectric composites with large strain under low driving fields

被引：3
|
作者：
Duong, Trang An [1 ,2 ]
Devita, Mukhlishah Aisyah [1 ]
Han, Hyoung-Su [1 ]
Lee, Jae-Shin [1 ]
机构：
[1] Univ Ulsan, Sch Mat Sci & Engn, Techno Saneop Ro 55Beon Gil 12, Ulsan, South Korea
[2] Hue Univ Educ, Phys Dept, 34 Le Loi, Hue City, Thua Thien Hue, Vietnam
来源：
MATERIALS LETTERS | 2023年 / 331卷
关键词：
Lead-free piezoceramics; Composites; High strain; Heterogeneity; Low field;
D O I：
10.1016/j.matlet.2022.133523
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Lead-free (1-f)[0.73Bi0.5Na0.5TiO3-0.27SrTiO3]-f[0.75Bi0.5Na0.5TiO3-0.25SrTiO3] composites were synthesized using a conventional solid-state reaction method. The f = 0.5 composites exhibited a giant unipolar strain of 0.176 % under an ultralow driving field of 2 kV/mm, corresponding to a high normalized strain of 880 pm/V. This value is comparable with that of other macro ferroelectric/relaxor composite materials under higher electric fields and even higher than those for commercial lead-based piezoceramic materials. We believe that these bismuth sodium titanate-based composites are extremely competitive in the practical applications of actuators at low electric fields.
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页数：4
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