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Boundary conditions control of topological polar nanodomains in epitaxial BiFeO3 (110) multilayered films
Geng, W. R.1,2; Tang, Y. L.1; Zhu, Y. L.1; Wang, Y. J.1; Ma, X. L.1,3
Corresponding AuthorMa, X. L.(xlma@imr.ac.cn)
2020-11-14
Source PublicationJOURNAL OF APPLIED PHYSICS
ISSN0021-8979
Volume128Issue:18Pages:8
AbstractTopological structures in ferroelectric materials play a crucial role in the potential applications of high-density memories and are currently the subject of intensive interest. Interfaces with local symmetry breaking have garnered wide attention in designing the topological domains in ferroelectric films by regulating the different boundary conditions. Here, we present multiple topological polar nanodomains near the heterointerfaces in the trilayered systems of BiFeO3/GdScO3/BiFeO3 grown on [110]-oriented TbScO3 substrates. The formation and stabilization of these topological polar states depend on the electrical and mechanical boundary conditions of the BiFeO3 layers. Aberration-corrected transmission electron microscopy observation reveals that the topological polar nanodomains, including nano-scale vortices and flux-closures at the termination of 109 degrees domain walls and the semi-vortices at the end of 180 degrees domain walls, are stabilized in the BiFeO3 layers confined by two orthorhombic structures. Furthermore, the formation of flux-closures near the BiFeO3/GdScO3 interface is influenced by the domain structures in the adjacent BiFeO3 layers, which is preferred by the 180 degrees domain patterns rather than the 109 degrees domain patterns. This work provides further understanding into the influences of boundary conditions on topological polar configurations and would offer guidance for designing novel topological states that enable the development of high-density memory devices.
Funding OrganizationKey Research Program of Frontier Sciences CAS ; National Natural Science Foundation of China (NNSFC) ; Shenyang National Laboratory for Materials Science ; Youth Innovation Promotion Association CAS
DOI10.1063/5.0028370
Indexed BySCI
Language英语
Funding ProjectKey Research Program of Frontier Sciences CAS[QYZDJ-SSW-JSC010] ; National Natural Science Foundation of China (NNSFC)[51971223] ; National Natural Science Foundation of China (NNSFC)[51671194] ; National Natural Science Foundation of China (NNSFC)[51922100] ; Shenyang National Laboratory for Materials Science[L2019R06] ; Shenyang National Laboratory for Materials Science[L2019R08] ; Shenyang National Laboratory for Materials Science[L2019F01] ; Shenyang National Laboratory for Materials Science[L2019F13] ; Youth Innovation Promotion Association CAS[2016177]
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
WOS IDWOS:000591873200002
PublisherAMER INST PHYSICS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/141382
Collection中国科学院金属研究所
Corresponding AuthorMa, X. L.
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Wenhua Rd 72, Shenyang 110016, Peoples R China
3.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Langongping Rd 287, Lanzhou 730050, Peoples R China
Recommended Citation
GB/T 7714
Geng, W. R.,Tang, Y. L.,Zhu, Y. L.,et al. Boundary conditions control of topological polar nanodomains in epitaxial BiFeO3 (110) multilayered films[J]. JOURNAL OF APPLIED PHYSICS,2020,128(18):8.
APA Geng, W. R.,Tang, Y. L.,Zhu, Y. L.,Wang, Y. J.,&Ma, X. L..(2020).Boundary conditions control of topological polar nanodomains in epitaxial BiFeO3 (110) multilayered films.JOURNAL OF APPLIED PHYSICS,128(18),8.
MLA Geng, W. R.,et al."Boundary conditions control of topological polar nanodomains in epitaxial BiFeO3 (110) multilayered films".JOURNAL OF APPLIED PHYSICS 128.18(2020):8.
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