Thickness Dependence of Oxygen Vacancy Ordering in Strained LaCoO(3-x )Thin Films

doi:10.1021/acs.jpcc.0c02545

IMR OpenIR

	Thickness Dependence of Oxygen Vacancy Ordering in Strained LaCoO(3-x )Thin Films
	Zhang, Ningbin 1,3; Tian, Xianhui 1,3; Zhu, Yinlian 1; Wang, Yujia 1; Tang, Yunlong 1; Zou, Minjie 1,3; Ma, Jinyuan 1,2; Feng, Yanpeng 1,4; Geng, Wanrong 1,3; Cao, Yi 1,3; Ma, Xiuliang 1,2
通讯作者	Zhu, Yinlian(ylzhu@imr.ac.cn) ; Ma, Xiuliang(xlma@imr.ac.cn)
	2020-06-11
发表期刊	JOURNAL OF PHYSICAL CHEMISTRY C
ISSN	1932-7447
卷号	124 期号:23 页码:12492-12501
摘要	The 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.
资助者	Key Research Program of Frontier Sciences CAS ; National Natural Science Foundation of China ; Shenyang National Laboratory for Materials Science ; Youth Innovation Promotion Association CAS
DOI	10.1021/acs.jpcc.0c02545
收录类别	SCI
语种	英语
资助项目	Key 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研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000541745800035
出版者	AMER CHEMICAL SOC
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/139417
专题	中国科学院金属研究所
通讯作者	Zhu, Yinlian; Ma, Xiuliang
作者单位	1.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
推荐引用方式 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.