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

doi:10.7498/aps.69.20201718

IMR OpenIR

	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
发表期刊	ACTA PHYSICA SINICA
卷号	69 期号:21
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.
DOI	10.7498/aps.69.20201718
WOS记录号	WOS:000595932500016
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/155658
专题	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).