Periodic vortex-antivortex pairs in tensile strained PbTiO3films

doi:10.1063/5.0023871

	Periodic vortex-antivortex pairs in tensile strained PbTiO3films
	Chen, Y.T.3,4; Tang, Y.L.4; Zhu, Y.L.4; Wang, Y.J.4; Han, M.J.2; Zou, M.J.4; Feng, Y.P.4; Geng, W.R.3,4; Gong, F.H.3,4; Ma, X.L.1,4
刊名	Applied Physics Letters
	2020-11-09
卷号	117 期号:19
关键词	Ferroelectric films Gadolinium compounds High resolution transmission electron microscopy Lead titanate Pulsed laser deposition Titanium compounds TopologyClosure structures Domain pattern Domain structure High-angle annular dark fields Multi-layered films Scientific researches Topological structure Vortex-antivortex pairs
ISSN号	00036951
DOI	10.1063/5.0023871
英文摘要	Topological lattices such as vortices are of importance in both scientific research and application potential. Here, we observed periodic vortex-antivortex pairs in PbTiO3/SrTiO3 multilayered films deposited on orthorhombic (110)-oriented GdScO3 by pulsed laser deposition. Domain patterns of the PbTiO3 layers containing topological structures were analyzed in detail by using advanced transmission electron microscopy. It was found that by increasing the PbTiO3 thickness, a/c domains with extra c domains will form in the triangle a domains in pure flux-closure structures. Atomically resolved high-angle annular dark field-scanning TEM imaging demonstrates that this specific domain structure results in vortex-antivortex pairs at the junctions of extra c domains and the original flux-closure structure, forming a periodic vortex-antivortex array throughout the PbTiO3 layer. These results suggest a pathway for designing new topological structures in ferroelectric films. © 2020 Author(s).
语种	英语
出版者	American Institute of Physics Inc.
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/132308]
专题	学校办公室（保密办）
作者单位	1.State Key Lab of Advanced Processing and Recycling on Non-ferrous Metals, Lanzhou University of Technology, Langongping Road 287, Lanzhou; 730050, China 2.Department of Physics, Southern University of Science and Technology, Shenzhen; 518055, China; 3.School of Materials Science and Engineering, University of Science and Technology of China, Wenhua Road 72, Shenyang; 110016, China; 4.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, Shenyang; 110016, China;
推荐引用方式 GB/T 7714	Chen, Y.T.,Tang, Y.L.,Zhu, Y.L.,et al. Periodic vortex-antivortex pairs in tensile strained PbTiO3films[J]. Applied Physics Letters,2020,117(19).
APA	Chen, Y.T..,Tang, Y.L..,Zhu, Y.L..,Wang, Y.J..,Han, M.J..,...&Ma, X.L..(2020).Periodic vortex-antivortex pairs in tensile strained PbTiO3films.Applied Physics Letters,117(19).
MLA	Chen, Y.T.,et al."Periodic vortex-antivortex pairs in tensile strained PbTiO3films".Applied Physics Letters 117.19(2020).