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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 PublicationACTA PHYSICA SINICA
Volume69Issue:21
AbstractIn 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.
DOI10.7498/aps.69.20201718
WOS IDWOS:000595932500016
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://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).
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