Observation of multi-order polar radial vortices and their topological transition
Abstract Topological states have garnered enormous interest in both magnetic and ferroelectric materials for promising candidates of next-generation information carriers. Especially, multi-order topological structures with modulative topological charges are promising for multi-state storage. Here, b...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-03-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-58008-w |
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| author | Wan-Rong Geng Xiangwei Guo Yin-Lian Zhu Desheng Ma Yun-Long Tang Yu-Jia Wang Yongjun Wu Zijian Hong Xiu-Liang Ma |
| author_facet | Wan-Rong Geng Xiangwei Guo Yin-Lian Zhu Desheng Ma Yun-Long Tang Yu-Jia Wang Yongjun Wu Zijian Hong Xiu-Liang Ma |
| author_sort | Wan-Rong Geng |
| collection | DOAJ |
| description | Abstract Topological states have garnered enormous interest in both magnetic and ferroelectric materials for promising candidates of next-generation information carriers. Especially, multi-order topological structures with modulative topological charges are promising for multi-state storage. Here, by engineering boundary conditions, we directly observe the self-assembly two-order ferroelectric radial vortices in high-density BiFeO3 nanostructures. The as-observed two-order radial vortex features a doughnut-like out-of-plane polarization distribution and four-quadrant in-plane distribution, with the topological charge of Q = 0. Systematic dimensional control of the BiFeO3 nanostructures reveals size-dependent stabilization of distinct topological states, from elementary one-order to complex three-order radial vortices, which is further rationalized by phase-field simulations. The transition between different topological states with various topological charges is also realized under an external electric field. This study opens up an avenue for generating configurable polar topological states, offering potential advancements in designing high-performance multi-state memory devices. |
| format | Article |
| id | doaj-art-16998b511b9849c69b93b80d7bc798cf |
| institution | DOAJ |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-16998b511b9849c69b93b80d7bc798cf2025-08-20T02:41:33ZengNature PortfolioNature Communications2041-17232025-03-011611910.1038/s41467-025-58008-wObservation of multi-order polar radial vortices and their topological transitionWan-Rong Geng0Xiangwei Guo1Yin-Lian Zhu2Desheng Ma3Yun-Long Tang4Yu-Jia Wang5Yongjun Wu6Zijian Hong7Xiu-Liang Ma8Bay Area Center for Electron Microscopy, Songshan Lake Materials LaboratoryState Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang UniversityBay Area Center for Electron Microscopy, Songshan Lake Materials LaboratorySchool of Applied and Engineering Physics, Cornell UniversityShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesState Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang UniversityState Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang UniversityBay Area Center for Electron Microscopy, Songshan Lake Materials LaboratoryAbstract Topological states have garnered enormous interest in both magnetic and ferroelectric materials for promising candidates of next-generation information carriers. Especially, multi-order topological structures with modulative topological charges are promising for multi-state storage. Here, by engineering boundary conditions, we directly observe the self-assembly two-order ferroelectric radial vortices in high-density BiFeO3 nanostructures. The as-observed two-order radial vortex features a doughnut-like out-of-plane polarization distribution and four-quadrant in-plane distribution, with the topological charge of Q = 0. Systematic dimensional control of the BiFeO3 nanostructures reveals size-dependent stabilization of distinct topological states, from elementary one-order to complex three-order radial vortices, which is further rationalized by phase-field simulations. The transition between different topological states with various topological charges is also realized under an external electric field. This study opens up an avenue for generating configurable polar topological states, offering potential advancements in designing high-performance multi-state memory devices.https://doi.org/10.1038/s41467-025-58008-w |
| spellingShingle | Wan-Rong Geng Xiangwei Guo Yin-Lian Zhu Desheng Ma Yun-Long Tang Yu-Jia Wang Yongjun Wu Zijian Hong Xiu-Liang Ma Observation of multi-order polar radial vortices and their topological transition Nature Communications |
| title | Observation of multi-order polar radial vortices and their topological transition |
| title_full | Observation of multi-order polar radial vortices and their topological transition |
| title_fullStr | Observation of multi-order polar radial vortices and their topological transition |
| title_full_unstemmed | Observation of multi-order polar radial vortices and their topological transition |
| title_short | Observation of multi-order polar radial vortices and their topological transition |
| title_sort | observation of multi order polar radial vortices and their topological transition |
| url | https://doi.org/10.1038/s41467-025-58008-w |
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