Institutional Repository of Coll Mat Sci & Engn
Polarization Rotation in Ultrathin Ferroelectrics Tailored by Interfacial Oxygen Octahedral Coupling | |
Zhang, Sirui1,2; Guo, Xiangwei1,4; Tang, Yunlong1; Ma, Desheng3; Zhu, Yinlian1; Wang, Yujia1; Li, Shuang1,2; Han, Mengjiao1,2; Chen, Dong1; Ma, Jinyuan1,2,5 | |
2018-04 | |
发表期刊 | ACS NANO |
ISSN | 1936-0851 |
卷号 | 12期号:4页码:3681-3688 |
摘要 | Multiple polar states and giant piezoelectric responses could be driven by polarization rotation in ferroelectric films, which have potential functionalities in modern material applications. Although theoretical calculations have predicted polarization rotation in pure PbTiO3 films without domain walls and strains, direct experiment has rarely confirmed such polar states under this condition. Here, we observed that interfacial oxygen octahedral coupling (OOC) can introduce an oxygen octahedral rotation, which induces polarization rotation in single domain PbTiO3 films with negligible strains. We have grown ultrathin PbTiO3 films (3.2 nm) on both SrTiO3 and Nb:SrTiO3 substrates and applied aberration-corrected scanning transmission electron microscopy (STEM) to study the interfacial OOC effect. Atomic mappings unit cell by unit cell demonstrate that polarization rotation occurs in PbTiO3 films on both substrates. The distortion of oxygen octahedra in PbTiO3 is proven by annular bright-field STEM. The critical thickness for this polarization rotation is about 4 nm (10 unit cells), above which polarization rotation disappears. First-principles calculations manifest that the interfacial OOC is responsible for the polarization rotation state. These results may shed light on further understanding the polarization behavior in ultrathin ferroelectrics and be helpful to develop relevant devices as polarization rotation is known to be closely related to superior electromechanical responses. |
关键词 | ferroelectric material interface coupling ultrathin PbTiO3 film polarization rotation aberration-corrected scanning transmission electron microscopy |
DOI | 10.1021/acsnano.8b00862 |
收录类别 | SCI ; SCIE |
语种 | 英语 |
资助项目 | IMR SYNL-T.S. Ke Research Fellowship[2016177] |
WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
WOS类目 | Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
WOS记录号 | WOS:000431088200065 |
出版者 | AMER CHEMICAL SOC |
EI入藏号 | 20181705058348 |
EI主题词 | Titanium compounds |
EI分类号 | 531.2 Metallography - 602.2 Mechanical Transmissions - 701.1 Electricity: Basic Concepts and Phenomena - 708.1 Dielectric Materials - 741.3 Optical Devices and Systems - 804 Chemical Products Generally - 921 Mathematics - 931.1 Mechanics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/32733 |
专题 | 材料科学与工程学院 材料科学与工程学院_特聘教授组 |
通讯作者 | Zhu, Yinlian; Ma, Xiuliang |
作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Liaoning, Peoples R China; 2.Univ Chinese Acad Sci, Yuquan Rd 19, Beijing 100049, Peoples R China; 3.Nankai Univ, Sch Phys, Weijin Rd 94, Tianjin 300071, Peoples R China; 4.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China; 5.Lanzhou Univ Technol, Sch Mat Sci & Engn, Langongping Rd 287, Lanzhou 730050, Gansu, Peoples R China |
通讯作者单位 | 材料科学与工程学院 |
推荐引用方式 GB/T 7714 | Zhang, Sirui,Guo, Xiangwei,Tang, Yunlong,et al. Polarization Rotation in Ultrathin Ferroelectrics Tailored by Interfacial Oxygen Octahedral Coupling[J]. ACS NANO,2018,12(4):3681-3688. |
APA | Zhang, Sirui.,Guo, Xiangwei.,Tang, Yunlong.,Ma, Desheng.,Zhu, Yinlian.,...&Ma, Xiuliang.(2018).Polarization Rotation in Ultrathin Ferroelectrics Tailored by Interfacial Oxygen Octahedral Coupling.ACS NANO,12(4),3681-3688. |
MLA | Zhang, Sirui,et al."Polarization Rotation in Ultrathin Ferroelectrics Tailored by Interfacial Oxygen Octahedral Coupling".ACS NANO 12.4(2018):3681-3688. |
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