| Construction of novel ferroelectric topological structures and their structural characteristics at sub-angstrom level | |
| Wang Yu-Jia; Geng Wan-Rong; Tang Yun-Long; Zhu Yin-Lian; Ma Xiu-Liang | |
| 2020-11-05 | |
| Source Publication | ACTA PHYSICA SINICA
 |
| Volume | 69Issue:21 |
| Abstract | In this paper, the recent progress of ferroelectric topologies is briefly reviewed with the emphasis on the important role of state-of-the-art aberration-corrected transmission electron microscopy in revealing the topological features in nanoscale ferroelectric materials. By identifying the ion displacement at a sub-angstrom level, the corresponding polarization distribution can be determined which uncovers the characteristics of topological structures. The formation mechanisms of ferroelectric topological structures and their evolutions under external fields are summarized from the perspective of strain, screening, and external fields for two prototypical ferroelectric materials, PbTiO3 and BiFeO3. For the PbTiO3, its topological structures such as fluxclosures, vortices, bubbles, skyrmions, and merons can be well demonstrated in a thickness-strain-screening phase diagram, which could be a guideline for better understanding the topological structures and also for the future exploration. For BiFeO3, its topological structures reported are classified as two categories: one is the unscreened topological structure such as vortices and the other is the screened topological structure (center-type domains). Finally, we present the prospects for the future development of the ferroelectric topologies. |
| DOI | 10.7498/aps.69.20201718 |
| WOS ID | WOS:000595932500016 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/155658 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Wang Yu-Jia,Geng Wan-Rong,Tang Yun-Long,et al. Construction of novel ferroelectric topological structures and their structural characteristics at sub-angstrom level[J]. ACTA PHYSICA SINICA,2020,69(21). |
| APA | Wang Yu-Jia,Geng Wan-Rong,Tang Yun-Long,Zhu Yin-Lian,&Ma Xiu-Liang.(2020).Construction of novel ferroelectric topological structures and their structural characteristics at sub-angstrom level.ACTA PHYSICA SINICA,69(21). |
| MLA | Wang Yu-Jia,et al."Construction of novel ferroelectric topological structures and their structural characteristics at sub-angstrom level".ACTA PHYSICA SINICA 69.21(2020). |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment