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Oxygen-Valve Formed in Cobaltite-Based Heterostructures by Ionic Liquid and Ferroelectric Dual-Gating
Gu, Youdi1,2; Xu, Kun3,4; Song, Cheng2; Zhong, Xiaoyan3; Zhang, Hongrui5; Mao, Haijun6; Saleem, Muhammad Shahrukh2; Sun, Jirong5; Liu, Wei1; Zhang, Zhidong1; Pan, Feng2; Zhu, Jing3
Corresponding AuthorSong, Cheng(songcheng@mail.tsinghua.edu.cn) ; Liu, Wei(wliu@imr.ac.cn)
2019-05-29
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Volume11Issue:21Pages:19584-19595
AbstractManipulation of oxygen vacancies via electric-field-controlled ionic liquid gating has been reported in many model systems within the emergent fields of oxide electronics and iontronics. It is then significant to investigate the oxygen vacancy formation/annihilation and migration across an additional ferroelectric layer with ionic liquid gating. Here, we report that via a combination of ionic liquid and ferroelectric gating, the remote control of oxygen vacancies and magnetic phase transition can be achieved in SrCoO2.5 films capped with an ultrathin ferroelectric BaTiO3 layer at room temperature. The ultrathin BaTiO3 layer acts as an atomic oxygen valve and is semitransparent to oxygen-ion transport due to the competing interaction between vertical electron tunneling and ferroelectric polarization plus surface electrochemical changes in itself, thus resulting in the striking emergence of new mixed-phase SrCoOx. The lateral coexistence of brownmillerite phase SrCoO2.5 and perovskite phase SrCoO3-delta was directly observed by transmission electron microscopy. Besides the fundamental significance of long-range interaction in ionic liquid gating, the ability to control the flow of oxygen ions across the heterointerface by the oxygen valve provides a new approach on the atomic scale for designing multistate memories, sensors, and solid-oxide fuel cells.
Keywordionic liquid gating ferroelectric polarization oxygen vacancies phase transition oxygen valve
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; National 973 Project of China
DOI10.1021/acsami.9b02442
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2017YFB0405704] ; National Natural Science Foundation of China[51571128] ; National Natural Science Foundation of China[51671110] ; National Natural Science Foundation of China[51590883] ; National Natural Science Foundation of China[51702363] ; National Natural Science Foundation of China[51761135131] ; National 973 Project of China[2015CB654902]
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000470034700076
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/133824
Collection中国科学院金属研究所
Corresponding AuthorSong, Cheng; Liu, Wei
Affiliation1.Chinese Acad Sci, Univ Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
2.Tsinghua Univ, Key Lab Adv Mat MOE, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
3.Tsinghua Univ, Natl Ctr Electron Microscopy Beijing, Key Lab Adv Mat MOE, State Key Lab New Ceram & Fine Proc,Sch Mat Sci &, Beijing 100084, Peoples R China
4.Tsinghua Univ, Cent Nano & Micro Mech, Beijing 100084, Peoples R China
5.Chinese Acad Sci, Univ Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
6.Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, Peoples R China
Recommended Citation
GB/T 7714
Gu, Youdi,Xu, Kun,Song, Cheng,et al. Oxygen-Valve Formed in Cobaltite-Based Heterostructures by Ionic Liquid and Ferroelectric Dual-Gating[J]. ACS APPLIED MATERIALS & INTERFACES,2019,11(21):19584-19595.
APA Gu, Youdi.,Xu, Kun.,Song, Cheng.,Zhong, Xiaoyan.,Zhang, Hongrui.,...&Zhu, Jing.(2019).Oxygen-Valve Formed in Cobaltite-Based Heterostructures by Ionic Liquid and Ferroelectric Dual-Gating.ACS APPLIED MATERIALS & INTERFACES,11(21),19584-19595.
MLA Gu, Youdi,et al."Oxygen-Valve Formed in Cobaltite-Based Heterostructures by Ionic Liquid and Ferroelectric Dual-Gating".ACS APPLIED MATERIALS & INTERFACES 11.21(2019):19584-19595.
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