Atomic-scale analysis of the interface structure and lattice mismatch relaxation of Bi2Sr2CaCu2O8+delta/SrTiO3 heterostructure

doi:10.1016/j.ceramint.2020.11.233

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	Atomic-scale analysis of the interface structure and lattice mismatch relaxation of Bi2Sr2CaCu2O8+delta/SrTiO3 heterostructure
	Zhang, Jian 2,3; Wang, Weizhen 1; Wang, Tianlin 4; Jiang, Lili 2,3; Wang, Nan 2,3; Dai, Yuxiang 2,3; Wang, Mingguang 2,3; Qi, Yang 2,3
刊名	CERAMICS INTERNATIONAL
	2021-03-15
卷号	47 期号:6 页码:8722-8727
关键词	Bi-2212 superconducting films Heterointerface Lattice mismatch relaxation Interface structure Defects Tensile strain
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2020.11.233
通讯作者	Wang, Mingguang(wangmg@imp.neu.edu.cn) ; Qi, Yang(qiyang@imp.neu.edu.cn)
英文摘要	With the increasing research on heterojunctions, it is gradually been realized that interface structure and strain have a huge impact on film properties. However, the research on Bi-based superconducting heterojunctions is still lacking and needs to be explored at the atomic-scale. In this article, the interface structure, element diffusion, and lattice mismatch relaxation of the Bi2Sr2CaCu2O8+delta(Bi-2212)/SrTiO3 heterojunction have been investigated by aberration-corrected high-angle annular dark-field scanning transmission electron microscopy (Cs-HAADF STEM), energy-dispersive X-ray spectroscopy (EDX), and geometric phase analysis (GPA). The experiment results reveal the interfacial atomic sequence as SrTiO3(TiO2-terminated)-SrO-Cu/TiO2-Ca-BiO-(Bi-2212)n, where the SrO layer is the nucleation layer and Ti atoms diffuse into the CuO2 layer. The Bi-2212/SrTiO3 heterointerface is found to be semi-coherent and accompanied by the non-ideally periodic arrangement of stand-off misfit dislocations. Moreover, lattice distortion and stacking fault have also been revealed to release part of the in-plane lattice mismatch. Through the combined effect of the above several lattice mismatch relaxation methods, the final Bi-2212 film experiences an average in-plane tensile strain (epsilon(xx) -+0.414%) compared with bulk Bi-2212.
资助项目	National Natural Science Foundation of China[61961116] ; China Postdoctoral Science Foundation[2018M631801] ; Postdoctoral Foundation of Northeastern University[20180301]
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000621492900004
资助机构	National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Postdoctoral Foundation of Northeastern University
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/161022]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, Mingguang; Qi, Yang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 2.Northeastern Univ, Sch Mat Sci & Engn, Dept Mat Phys & Chem, Shenyang 110819, Liaoning, Peoples R China 3.Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Liaoning, Peoples R China 4.China Med Univ, Sch Fundamental Sci, Dept Phys & Biophys, Shenyang 110122, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jian,Wang, Weizhen,Wang, Tianlin,et al. Atomic-scale analysis of the interface structure and lattice mismatch relaxation of Bi2Sr2CaCu2O8+delta/SrTiO3 heterostructure[J]. CERAMICS INTERNATIONAL,2021,47(6):8722-8727.
APA	Zhang, Jian.,Wang, Weizhen.,Wang, Tianlin.,Jiang, Lili.,Wang, Nan.,...&Qi, Yang.(2021).Atomic-scale analysis of the interface structure and lattice mismatch relaxation of Bi2Sr2CaCu2O8+delta/SrTiO3 heterostructure.CERAMICS INTERNATIONAL,47(6),8722-8727.
MLA	Zhang, Jian,et al."Atomic-scale analysis of the interface structure and lattice mismatch relaxation of Bi2Sr2CaCu2O8+delta/SrTiO3 heterostructure".CERAMICS INTERNATIONAL 47.6(2021):8722-8727.