Giant electrostrain accompanying structural evolution in lead-free NBT-based piezoceramics
文献类型：期刊论文
| 作者 | Liu, Xing1; Xue, Saidong2; Li, Feng1; Ma, Jinpeng2; Zhai, Jiwei1; Shen, Bo1; Wang, Feifei2; Zhao, Xiangyong2; Yan, Haixue3 |
| 刊名 | Journal of Materials Chemistry C
 |
| 出版日期 | 2018 |
| 卷号 | 6期号:4页码:814-822 |
| ISSN号 | 20507534 |
| DOI | 10.1039/c7tc05359b |
| 英文摘要 | High-performance (Na0.5Bi0.5)TiO3(NBT) lead-free incipient ceramics are promising piezoactuator materials, but high driving fields to deliver the large strain limits their practical applications. Herein, we report a giant piezoelectric strain (d33∗) of 810 pm V-1at a low driving field of 4 kV mm-1in a novel ternary (0.94 - x)(Na0.5Bi0.5)TiO3-0.06Ba(Zr0.05Ti0.95)O3-x(Sr0.8Bi0.10.1)TiO2.95solid solution with x = 0.05 (SBT5). The field of SBT5 critical composition is notably reduced compared with other NBT-based ceramics, while its strain properties are maintained at a high level along with an excellent thermal stability. The dopant induces a randomly distributed local polarization field, which breaks the symmetry of Landau potential curves, boosts the ferroelectric instability and favors a more disordered relaxor structure. The giant strain in the critical composition SBT5 is due to a field-induced reversible relaxor-ferroelectric phase transformation, while the reduced driving field results from two synergistic effects: remanent quasi-ferroelectric order as the seed for the growth of polar domains helps the system skip the nucleation process; the local defects further facilitate the growth of ferroelectric domains. The composition, temperature and electric-field dependence of structural evolutions were systematically elucidated from the micro- and macroscopic view. This study opens up a feasible and effective way for achieving giant electrostrain in lead-free actuator materials. © 2018 The Royal Society of Chemistry. |
| 出版者 | Royal Society of Chemistry |
| 源URL | [http://ir.sic.ac.cn/handle/331005/25232]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.Key Laboratory of Advanced Civil Engineering Materials, Ministry of Education, Functional Materials Research Laboratory, School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai; 201804, China; 2.Key Laboratory of Optoelectronic Material and Device, Department of Physics, Shanghai Normal University, Shanghai; 200234, China; 3.School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London; E1 4NS, United Kingdom |
| 推荐引用方式 GB/T 7714 | Liu, Xing,Xue, Saidong,Li, Feng,et al. Giant electrostrain accompanying structural evolution in lead-free NBT-based piezoceramics[J]. Journal of Materials Chemistry C,2018,6(4):814-822. |
| APA | Liu, Xing.,Xue, Saidong.,Li, Feng.,Ma, Jinpeng.,Zhai, Jiwei.,...&Yan, Haixue.(2018).Giant electrostrain accompanying structural evolution in lead-free NBT-based piezoceramics.Journal of Materials Chemistry C,6(4),814-822. |
| MLA | Liu, Xing,et al."Giant electrostrain accompanying structural evolution in lead-free NBT-based piezoceramics".Journal of Materials Chemistry C 6.4(2018):814-822. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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