Knowledge Management System Of Institute of metal research,CAS
Oxygen vacancy enhanced ferroelectricity in BTO:SRO nanocomposite films | |
Lin, Jun Liang; He, Ri; Lu, Zengxing; Lu, Yi; Wang, Zhiming; Zhong, Zhicheng; Zhao, Xiang; Li, Run-Wei; Zhang, Zhi Dong; Wang, Zhan Jie | |
2020-10-15 | |
Source Publication | ACTA MATERIALIA
![]() |
Volume | 199Pages:9-18 |
Abstract | 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. |
DOI | 10.1016/j.actamat.2020.08.016 |
WOS ID | WOS:000577994500002 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.imr.ac.cn/handle/321006/82434 |
Collection | 中国科学院金属研究所 |
Recommended Citation 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. |
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