Institutional Repository of Coll Mat Sci & Engn
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 | |
2021-11-24 | |
发表期刊 | NANO LETTERS |
ISSN | 1530-6984 |
卷号 | 21期号:22页码:9601-9608 |
摘要 | 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. |
关键词 | multiferroic oxides BiFeO3 films flexoelectric effect strain-field coupling aberration-corrected transmission electron microscopy |
DOI | 10.1021/acs.nanolett.1c03352 |
收录类别 | SCIE |
语种 | 英语 |
WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
WOS类目 | Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
WOS记录号 | WOS:000756421600031 |
出版者 | AMER CHEMICAL SOC |
来源库 | WOS |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/162423 |
专题 | 材料科学与工程学院_特聘教授组 |
通讯作者 | Tang, Yunlong; Zhu, Yinlian |
作者单位 | 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 |
推荐引用方式 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. |
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