| Colossal Room-Temperature Ferroelectric Polarizations in SrTiO3/SrRuO3 Superlattices Induced by Oxygen Vacancies | |
| Lin, Jun Liang1,2; Sun, Yuanwei3,4; He, Ri5; Li, Yanxi6; Zhong, Zhicheng5,7; Gao, Peng3,4,8; Zhao, Xiang1; Zhang, Zhidong2; Wang, Zhan Jie9 | |
| Corresponding Author | Zhong, Zhicheng(zhong@nimte.ac.cn) ; Gao, Peng(p-gao@pku.edu.cn) ; Wang, Zhan Jie(wangzj@imr.ac.cn) |
| 2022-08-19 | |
| Source Publication | NANO LETTERS
 |
| ISSN | 1530-6984 |
| Pages | 8 |
| Abstract | Artificial superlattices have demonstrated many unique phenomena not found in bulk materials. For this investigation, SrTiO3/SrRuO3 paraelectric/metallic superlattices with various stacking periods were synthesized via pulsed laser deposition. A robust room-temperature ferroelectric polarization (similar to 46 mu C/cm(2)) was found in the superlattices with 2 unit cell (u.c.) thick SrRuO3 layers, despite the fact that neither SrTiO3 nor SrRuO3 is inherently ferroelectric. Results obtained from atomically resolved elemental mapping and X-ray photoelectron spectroscopy verified that oxygen vacancies accumulated at the SrTiO3/SrRuO3 interfaces, causing lattice distortions and increased tetragonality (c/a). The observed ferroelectric responses can be mainly attributed to the broken spatial inversion symmetry induced by the ordered distribution of oxygen vacancies at the SrTiO3/SrRuO3 interfaces, coupled with the triggering of external electric field. The resulting polarization mechanism induced by oxygen vacancies suggests viable ways for improving the electrical properties of ferroelectric materials, with the goal of expanding the functionality of a range of electronic devices. |
| Keyword | superlattices SrTiO3/SrRuO3 interface pulsed laser deposition oxygen vacancy ferroelectric polarization |
| Funding Organization | basic scientific research projects of colleges and universities of Liaoning Province of China ; National Basic Research Program of China ; National Natural Science Foundation of China ; scientific research fund project of the Educational Department of Liaoning Province of China |
| DOI | 10.1021/acs.nanolett.2c02175 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | basic scientific research projects of colleges and universities of Liaoning Province of China[LZGD2017005] ; National Basic Research Program of China[2017YFA0206302] ; National Natural Science Foundation of China[52125307] ; scientific research fund project of the Educational Department of Liaoning Province of China[LJKZ0100] |
| 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:000846292900001 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/175056 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhong, Zhicheng; Gao, Peng; Wang, Zhan Jie |
| Affiliation | 1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res IMR, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Peking Univ, Int Ctr Quantum Mat, Sch Phys, Beijing 100871, Peoples R China 4.Peking Univ, Sch Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China 5.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Zhejiang Prov Key Lab Magnet Mat & Applicat Techno, Ningbo 315201, Peoples R China 6.Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA 7.Univ Chinese Acad Sci, China Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China 8.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China 9.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China |
| Recommended Citation GB/T 7714 | Lin, Jun Liang,Sun, Yuanwei,He, Ri,et al. Colossal Room-Temperature Ferroelectric Polarizations in SrTiO3/SrRuO3 Superlattices Induced by Oxygen Vacancies[J]. NANO LETTERS,2022:8. |
| APA | Lin, Jun Liang.,Sun, Yuanwei.,He, Ri.,Li, Yanxi.,Zhong, Zhicheng.,...&Wang, Zhan Jie.(2022).Colossal Room-Temperature Ferroelectric Polarizations in SrTiO3/SrRuO3 Superlattices Induced by Oxygen Vacancies.NANO LETTERS,8. |
| MLA | Lin, Jun Liang,et al."Colossal Room-Temperature Ferroelectric Polarizations in SrTiO3/SrRuO3 Superlattices Induced by Oxygen Vacancies".NANO LETTERS (2022):8. |
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