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Thickness Dependence of Oxygen Vacancy Ordering in Strained LaCoO(3-x )Thin Films
Zhang, Ningbin1,3; Tian, Xianhui1,3; Zhu, Yinlian1; Wang, Yujia1; Tang, Yunlong1; Zou, Minjie1,3; Ma, Jinyuan1,2; Feng, Yanpeng1,4; Geng, Wanrong1,3; Cao, Yi1,3; Ma, Xiuliang1,2
Corresponding AuthorZhu, Yinlian(ylzhu@imr.ac.cn) ; Ma, Xiuliang(xlma@imr.ac.cn)
2020-06-11
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
Volume124Issue:23Pages:12492-12501
AbstractThe physical properties of perovskite oxides are very sensitive to oxygen vacancy structures, and an unambiguous acquaintance of vacancy structures of thin films is the precondition for applications of many functional devices. Here, we report critical thickness control over oxygen vacancy ordering structure in epitaxial LaCoO3-x (LCO) thin films characterized by atomic resolution scanning transmission electron microscopy (STEM). Lattice mappings extracted from Cs-corrected STEM images demonstrate that vacancy ordering planes are vertically distributed in LCO films grown on SrTiO3 substrates with the thickness above 5 nm, transversally distributed when the thickness is below 5 nm and distributed in a mixed manner when the thickness is 5 nm. Similar phenomenon also happens in LCO/NdGaO3 film systems with the critical thickness of around 13 nm due to the reduced tensile strain imposed by the substrate. The thickness effect phenomenon is collaborated by first-principles calculations and the formation mechanism is discussed from the point of view of strain relaxation. These findings demonstrate that the thickness can exquisitely control the periodic modulations of vacancy ordering structure in LCO thin films, suggesting an effective pathway of thickness controlling and enhancing physical properties of functional oxide films.
Funding OrganizationKey Research Program of Frontier Sciences CAS ; National Natural Science Foundation of China ; Shenyang National Laboratory for Materials Science ; Youth Innovation Promotion Association CAS
DOI10.1021/acs.jpcc.0c02545
Indexed BySCI
Language英语
Funding ProjectKey Research Program of Frontier Sciences CAS[QYZDJ-SSW-JSC010] ; National Natural Science Foundation of China[51971223] ; National Natural Science Foundation of China[51671194] ; National Natural Science Foundation of China[51922100] ; Shenyang National Laboratory for Materials Science[L2019R06] ; Shenyang National Laboratory for Materials Science[L2019R08] ; Shenyang National Laboratory for Materials Science[L2019F01] ; Shenyang National Laboratory for Materials Science[L2019F13] ; Youth Innovation Promotion Association CAS[2016177]
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000541745800035
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/139417
Collection中国科学院金属研究所
Corresponding AuthorZhu, Yinlian; Ma, Xiuliang
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
3.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Ningbin,Tian, Xianhui,Zhu, Yinlian,et al. Thickness Dependence of Oxygen Vacancy Ordering in Strained LaCoO(3-x )Thin Films[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2020,124(23):12492-12501.
APA Zhang, Ningbin.,Tian, Xianhui.,Zhu, Yinlian.,Wang, Yujia.,Tang, Yunlong.,...&Ma, Xiuliang.(2020).Thickness Dependence of Oxygen Vacancy Ordering in Strained LaCoO(3-x )Thin Films.JOURNAL OF PHYSICAL CHEMISTRY C,124(23),12492-12501.
MLA Zhang, Ningbin,et al."Thickness Dependence of Oxygen Vacancy Ordering in Strained LaCoO(3-x )Thin Films".JOURNAL OF PHYSICAL CHEMISTRY C 124.23(2020):12492-12501.
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