Self-assembly ordered domain configurations serve the high electromechanical response lead-free thin films

Kun Zhu, Xiaoming Shi, Guanglong Ge, Weiwei Yang, Jin Qian, Cheng Shi, Yang Liu, Huarong Zeng, Zhenyong Man, Yongqi Wei, Bo Shen, Jiwei Zhai*, Houbing Huang, Xiujian Chou

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

摘要

Micro-electromechanical systems (MEMS) urgently require high-performance lead-free piezoelectric thin films, which is rather difficult to achieve via the existing strategy of designing a morphotropic phase boundary. How to update the optimization methods for piezoelectric performance is a challenge. Here, we proposed a simple and interesting way, that is, constructing the self-assembly ordered domain configurations in our oriented lead-free thin films. Driven by the local strain, we realized a periodic arrangement of disordered nano-domains and ordered striped domain structures, and thus obtained an outstanding electrostrain of 1.55%. Multi-scale characterization and phase-field simulations suggest the underlying mechanism of this giant strain as the synergy between the high polarization brought about by the periodic nano-pillar-like striped domains, the highly sensitive electrical stimulation response of defective dipoles and disordered nano-domains. The presented high electrostrain supports the potential MEMS application, the proposed optimization strategy serves the next generation lead-free thin films with higher electromechanical response.

源语言英语
页(从-至)3809-3817
页数9
期刊Journal of the European Ceramic Society
44
6
DOI
出版状态已出版 - 6月 2024

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Zhu, K., Shi, X., Ge, G., Yang, W., Qian, J., Shi, C., Liu, Y., Zeng, H., Man, Z., Wei, Y., Shen, B., Zhai, J., Huang, H., & Chou, X. (2024). Self-assembly ordered domain configurations serve the high electromechanical response lead-free thin films. Journal of the European Ceramic Society, 44(6), 3809-3817. https://doi.org/10.1016/j.jeurceramsoc.2024.01.083