Construction of novel ferroelectric topological structures and their structural characteristics at sub-angstrom level

doi:10.7498/aps.69.20201718

CORC > 金属研究所 > 中国科学院金属研究所

	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
刊名	ACTA PHYSICA SINICA
	2020-11-05
卷号	69 期号:21
DOI	10.7498/aps.69.20201718
英文摘要	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.
WOS记录号	WOS:000595932500016
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/155658]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 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).