| Atomic-Scale Tunable Flexoelectric Couplings in Oxide Multiferroics | |
| Geng, Wanrong1,2; Wang, Yujia3; Tang, Yunlong3; Zhu, Yinlian1,3; Wu, Bo1; Yang, Lixin3; Feng, Yanpeng1,2; Zou, Minjie1,2; Ma, Xiuliang3,4 | |
| Corresponding Author | Tang, Yunlong(yltang@imr.ac.cn) ; Zhu, Yinlian(zhuyinlian@sslab.org.cn) |
| 2021-11-24 | |
| Source Publication | NANO LETTERS
 |
| ISSN | 1530-6984 |
| Volume | 21Issue:22Pages:9601-9608 |
| Abstract | Flexoelectricity is an effective tool in modulating the crystallographic structures and properties of oxides for multifunctional applications. However, engineering the nonuniform strain to obtain tunable flexoelectric behaviors at the atomic scale remains an ongoing challenge in conventional substrate-imposed ferroelectric films. Here, the regulatable flexoelectric behaviors are demonstrated at atomic scale in [110]-oriented BiFeO3 thin films, which are triggered by the strainfield coupling of high-density interfacial dislocations. Using aberrationcorrected scanning transmission electron microscopy, the asymmetric polarization rotation around the single dislocation is revealed, which is induced by the gradient strain fields of the single dislocation. These strain fields are highly correlated to generate huge strain gradients between neighboring dislocations, and thereby, serial flexoelectric responses are engineered as a function of dislocation spacings in thicker BiFeO3 films. This work opens a pathway for the modulation of flexoelectric responses in ferroelectrics, which could be extended to other functional materials to create exotic phenomena. |
| Keyword | multiferroic oxides BiFeO3 films flexoelectric effect strain-field coupling aberration-corrected transmission electron microscopy |
| Funding Organization | National Natural Science Foundation of China ; Key Research Program of Frontier Sciences CAS ; Shenyang National Laboratory for Materials Science ; Scientific Instrument Developing Project of CAS ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association CAS ; China National Postdoctoral Program for Innovative Talents |
| DOI | 10.1021/acs.nanolett.1c03352 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51971223] ; National Natural Science Foundation of China[51922100] ; Key Research Program of Frontier Sciences CAS[QYZDJ-SSWJSC010] ; 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] ; Scientific Instrument Developing Project of CAS[YJKYYQ20200066] ; Youth Innovation Promotion Association of CAS[Y202048] ; Youth Innovation Promotion Association CAS[2021187] ; China National Postdoctoral Program for Innovative Talents[BX2021348] |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| WOS Subject | Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
| WOS ID | WOS:000756421600031 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/173478 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Tang, Yunlong; Zhu, Yinlian |
| Affiliation | 1.Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China 2.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China |
| Recommended Citation GB/T 7714 | Geng, Wanrong,Wang, Yujia,Tang, Yunlong,et al. Atomic-Scale Tunable Flexoelectric Couplings in Oxide Multiferroics[J]. NANO LETTERS,2021,21(22):9601-9608. |
| APA | Geng, Wanrong.,Wang, Yujia.,Tang, Yunlong.,Zhu, Yinlian.,Wu, Bo.,...&Ma, Xiuliang.(2021).Atomic-Scale Tunable Flexoelectric Couplings in Oxide Multiferroics.NANO LETTERS,21(22),9601-9608. |
| MLA | Geng, Wanrong,et al."Atomic-Scale Tunable Flexoelectric Couplings in Oxide Multiferroics".NANO LETTERS 21.22(2021):9601-9608. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment