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Oxygen vacancy enhanced ferroelectricity in BTO:SRO nanocomposite films
Lin, Jun Liang1,3; He, Ri2; Lu, Zengxing2; Lu, Yi4; Wang, Zhiming2; Zhong, Zhicheng2; Zhao, Xiang1; Li, Run-Wei2; Zhang, Zhi Dong3; Wang, Zhan Jie5
Corresponding AuthorZhong, Zhicheng(zhong@nimte.ac.cn) ; Wang, Zhan Jie(wangzj@imr.ac.cn)
2020-10-15
Source PublicationACTA MATERIALIA
ISSN1359-6454
Volume199Pages:9-18
AbstractThe 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.
KeywordNanocomposite Ferroelectricity Laser deposition Oxygen vacancy First-principles calculations
Funding Organizationbasic scientific research projects of colleges and universities of Liaoning Province ; major project of Industrial Technology Research Institute of Liaoning Colleges and Universities ; National Basic Research Program of China ; National Key R and D Program of China ; National Nature Science Foundation of China
DOI10.1016/j.actamat.2020.08.016
Indexed BySCI
Language英语
Funding Projectbasic scientific research projects of colleges and universities of Liaoning Province[LZGD2017005] ; major project of Industrial Technology Research Institute of Liaoning Colleges and Universities[201824010] ; National Basic Research Program of China[2017YFA0206302] ; National Key R and D Program of China[2017YFA0303602] ; National Nature Science Foundation of China[11774360]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000577994500002
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/141011
Collection中国科学院金属研究所
Corresponding AuthorZhong, Zhicheng; Wang, Zhan Jie
Affiliation1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China
2.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
3.Chinese Acad Sci, Inst Met Res IMR, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
4.Heidelberg Univ, Inst Theoret Phys, D-69120 Heidelberg, Germany
5.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China
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.
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