Yan Peikun, Qin Yalin, Xu Zhiyu, Han Fuxuan, Wang Yaqi, Wen Zheng, Zhang Yongcheng, Zhang Shujun
College of Physics, Key Laboratory of Photonics Materials and Technology in Universities of Shandong, Qingdao University, Qingdao 266071, P. R. China.
Institute for Superconductor and Electronic Materials, Australia Institute of Innovative Materials, University of Wollongong, Wollongong, NSW 2500, Australia.
ACS Appl Mater Interfaces. 2021 Nov 17;13(45):54210-54216. doi: 10.1021/acsami.1c17262. Epub 2021 Nov 3.
The 0.975[0.72Pb(MgNb)O-0.28PbTiO]-0.025EuO ceramics were prepared by a two-step sintering process including oxygen sintering and hot-pressing. An ultrahigh piezoelectric charge coefficient of 1400 pC/N and a superior optical transmittance up to 68% were simultaneously achieved. The underlying mechanism was discussed from a microstructural perspective, where the watermark domain configuration with a small domain size is responsible for the high optical transmission, while the large remanent polarization and dielectric constant and the introduced tetragonal phase with a parallel stripe domain structure are believed to synergistically contribute to the high piezoelectric coefficients. This work demonstrates that the rare-earth dopant in the PMN-PT ceramic system is conducive to enhanced transparency and piezoelectricity.
通过包括氧气烧结和热压的两步烧结工艺制备了0.975[0.72Pb(MgNb)O-0.28PbTiO]-0.025EuO陶瓷。同时实现了1400 pC/N的超高压电电荷系数和高达68%的优异光学透过率。从微观结构角度讨论了其潜在机制，其中具有小畴尺寸的水印畴构型导致了高光学透过率，而大的剩余极化和介电常数以及引入的具有平行条纹畴结构的四方相被认为协同促成了高压电系数。这项工作表明，PMN-PT陶瓷系统中的稀土掺杂剂有利于提高透明度和压电性。
