Control of ferroelectric polarization in BiFeO3 bilayer films through interface engineering
Abstract Predetermining the as-grown polarization of ferroelectric thin films is essential to integrate their reliable properties into electronic devices. However, studies have so far focused mainly on the control of the polarization state of a single ferroelectric layer. Here we report a strategy f...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-04-01
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| Series: | npj Quantum Materials |
| Online Access: | https://doi.org/10.1038/s41535-025-00763-6 |
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| _version_ | 1850172998757122048 |
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| author | Xiaokang Yao Can Wang Lei Liao Xinyan Wang Ning Liang Tao Yan Rui Wang Meng He Er-Jia Guo Chen Ge Lifen Wang Xuedong Bai Guozhen Yang Kuijuan Jin |
| author_facet | Xiaokang Yao Can Wang Lei Liao Xinyan Wang Ning Liang Tao Yan Rui Wang Meng He Er-Jia Guo Chen Ge Lifen Wang Xuedong Bai Guozhen Yang Kuijuan Jin |
| author_sort | Xiaokang Yao |
| collection | DOAJ |
| description | Abstract Predetermining the as-grown polarization of ferroelectric thin films is essential to integrate their reliable properties into electronic devices. However, studies have so far focused mainly on the control of the polarization state of a single ferroelectric layer. Here we report a strategy for the artificial modulation of pristine polarization in BiFeO3 bilayer films. We have fabricated multilayers of BiFeO3/SrTiO3/BiFeO3 on single-crystalline SrTiO3 (001) substrates. It is found that the out-of-plane polarization components of the BiFeO3 bilayer can be controlled by modifying the surface terminations of SrTiO3 interlayer and SrTiO3 substrate. Using aberration-corrected scanning transmission electron microscopy, we directly visualize the head-to-head and tail-to-tail polarization configurations formed by the BiFeO3 bilayers. Polar discontinuity at the ferroelectric/non-ferroelectric interface is the reason for tuning the orientation of electrical polarization. Our work provides an effective route to design fascinating ferroelectric multilayers with well-defined polarization direction. |
| format | Article |
| id | doaj-art-99630cfc66de4684a9bb924d3eca1f84 |
| institution | OA Journals |
| issn | 2397-4648 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Materials |
| spelling | doaj-art-99630cfc66de4684a9bb924d3eca1f842025-08-20T02:19:57ZengNature Portfolionpj Quantum Materials2397-46482025-04-011011810.1038/s41535-025-00763-6Control of ferroelectric polarization in BiFeO3 bilayer films through interface engineeringXiaokang Yao0Can Wang1Lei Liao2Xinyan Wang3Ning Liang4Tao Yan5Rui Wang6Meng He7Er-Jia Guo8Chen Ge9Lifen Wang10Xuedong Bai11Guozhen Yang12Kuijuan Jin13Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesAbstract Predetermining the as-grown polarization of ferroelectric thin films is essential to integrate their reliable properties into electronic devices. However, studies have so far focused mainly on the control of the polarization state of a single ferroelectric layer. Here we report a strategy for the artificial modulation of pristine polarization in BiFeO3 bilayer films. We have fabricated multilayers of BiFeO3/SrTiO3/BiFeO3 on single-crystalline SrTiO3 (001) substrates. It is found that the out-of-plane polarization components of the BiFeO3 bilayer can be controlled by modifying the surface terminations of SrTiO3 interlayer and SrTiO3 substrate. Using aberration-corrected scanning transmission electron microscopy, we directly visualize the head-to-head and tail-to-tail polarization configurations formed by the BiFeO3 bilayers. Polar discontinuity at the ferroelectric/non-ferroelectric interface is the reason for tuning the orientation of electrical polarization. Our work provides an effective route to design fascinating ferroelectric multilayers with well-defined polarization direction.https://doi.org/10.1038/s41535-025-00763-6 |
| spellingShingle | Xiaokang Yao Can Wang Lei Liao Xinyan Wang Ning Liang Tao Yan Rui Wang Meng He Er-Jia Guo Chen Ge Lifen Wang Xuedong Bai Guozhen Yang Kuijuan Jin Control of ferroelectric polarization in BiFeO3 bilayer films through interface engineering npj Quantum Materials |
| title | Control of ferroelectric polarization in BiFeO3 bilayer films through interface engineering |
| title_full | Control of ferroelectric polarization in BiFeO3 bilayer films through interface engineering |
| title_fullStr | Control of ferroelectric polarization in BiFeO3 bilayer films through interface engineering |
| title_full_unstemmed | Control of ferroelectric polarization in BiFeO3 bilayer films through interface engineering |
| title_short | Control of ferroelectric polarization in BiFeO3 bilayer films through interface engineering |
| title_sort | control of ferroelectric polarization in bifeo3 bilayer films through interface engineering |
| url | https://doi.org/10.1038/s41535-025-00763-6 |
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