Oxygen vacancy enhanced ferroelectricity in BTO:SRO nanocomposite films
文献类型：期刊论文
| 作者 | Lin, Jun Liang; He, Ri; Lu, Zengxing; Lu, Yi; Wang, Zhiming; Zhong, Zhicheng; Zhao, Xiang; Li, Run-Wei; Zhang, Zhi Dong; Wang, Zhan Jie |
| 刊名 | ACTA MATERIALIA
 |
| 出版日期 | 2020 |
| 卷号 | 199页码:9-18 |
| 关键词 | LEAD-FREE DOMAIN-STRUCTURES THIN-FILMS POLARIZATION TEMPERATURE |
| DOI | 10.1016/j.actamat.2020.08.016 |
| 英文摘要 | The enhancement of ferroelectric properties in lead-free ferroelectric is usually achieved by strain engineering. Here, we report a surprising polarization enhancement effect in an isostructural ferroelectric nanocomposite system composited by the ferroelectric material of BaTiO3 and metallic non-ferroelectric oxide of SrRuO3. BaTiO3:SrRuO3 (BTO:SRO) ferroelectric nanocomposite films with the volume ratio of nanogranular SRO ranging from 0 to 16% grown on the Nb-doped SrTiO3 (NSTO) single-crystal substrates by pulsed laser deposition (PLD) are investigated. Robust ferroelectric polarization is observed with a remanent polarization of about 40 mu C/cm(2), comparable to those found in Pb(ZrxTi1-x)O-3 thin films. By combining X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), density functional theory (DFT) calculations, and phase-field simulation, a hypothesis has been proposed that the polarization enhancement may be mainly attributed to the accumulation of oxygen vacancies at the BTO/SRO interface rather than lattice mismatch strain. The novel mechanism of polarization enhancement opens new possibilities for designing future ferroelectric devices. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 学科主题 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/20404]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Zhong, ZC (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo 315201, Peoples R China. 2.Wang, ZJ (corresponding author), Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Lin, Jun Liang,He, Ri,Lu, Zengxing,et al. Oxygen vacancy enhanced ferroelectricity in BTO:SRO nanocomposite films[J]. ACTA MATERIALIA,2020,199:9-18. |
| APA | Lin, Jun Liang.,He, Ri.,Lu, Zengxing.,Lu, Yi.,Wang, Zhiming.,...&Wang, Zhan Jie.(2020).Oxygen vacancy enhanced ferroelectricity in BTO:SRO nanocomposite films.ACTA MATERIALIA,199,9-18. |
| MLA | Lin, Jun Liang,et al."Oxygen vacancy enhanced ferroelectricity in BTO:SRO nanocomposite films".ACTA MATERIALIA 199(2020):9-18. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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