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Enhanced polarization and abnormal flexural deformation in bent freestanding perovskite oxides
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Cai, Songhua, Lun, Yingzhuo, Ji, Dianxiang, Lv, Peng, Han, Lu, Guo, Changqing, Zang, Yipeng, Gao, Si, Wei, Yifan, Gu, Min, Zhang, Chunchen, Gu, Zhengbin, Wang, Xueyun, Addiego, Christopher, Fang, Daining, Nie, Yuefeng, Hong, Jiawang, Wang, Peng and Pan, Xiaoqing (2022) Enhanced polarization and abnormal flexural deformation in bent freestanding perovskite oxides. Nature Communications, 13 (1). 5116. doi:10.1038/s41467-022-32519-2 ISSN 2041-1723. [ 🗎 Public]. [ (✓) hoa:511 ]
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WRAP-Enhanced-polarization-and-abnormal-flexural-deformation-in-bent-freestanding-perovskite-oxides-Wang-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (2087Kb) | Preview |
Official URL: http://dx.doi.org/10.1038/s41467-022-32519-2
Abstract
Recent realizations of ultrathin freestanding perovskite oxides offer a unique platform to probe novel properties in two-dimensional oxides. Here, we observe a giant flexoelectric response in freestanding BiFeO3 and SrTiO3 in their bent state arising from strain gradients up to 3.5 × 107 m−1, suggesting a promising approach for realizing ultra-large polarizations. Additionally, a substantial change in membrane thickness is discovered in bent freestanding BiFeO3, which implies an unusual bending-expansion/shrinkage effect in the ferroelectric membrane that has never been seen before in crystalline materials. Our theoretical model reveals that this unprecedented flexural deformation within the membrane is attributable to a flexoelectricity–piezoelectricity interplay. The finding unveils intriguing nanoscale electromechanical properties and provides guidance for their practical applications in flexible nanoelectromechanical systems.
| Item Type: | Journal Article | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Subjects: | Q Science > QC Physics Q Science > QE Geology |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Perovskite (Mineral) , Oxide minerals, Polarization (Nuclear physics), Perovskite (Mineral) -- Electromechanical analogies | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Journal or Publication Title: | Nature Communications | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Publisher: | Nature Publishing Group | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ISSN: | 2041-1723 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Official Date: | 31 August 2022 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Volume: | 13 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Number: | 1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Number of Pages: | 10 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Article Number: | 5116 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DOI: | 10.1038/s41467-022-32519-2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Publication Status: | Published | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Date of first compliant deposit: | 20 September 2022 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Date of first compliant Open Access: | 20 September 2022 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| RIOXX Funder/Project Grant: |
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