| Atomic-scale analysis of the interface structure and lattice mismatch relaxation of Bi2Sr2CaCu2O8+delta/SrTiO3 heterostructure | |
| Zhang, Jian1,2; Wang, Weizhen3; Wang, Tianlin4; Jiang, Lili1,2; Wang, Nan1,2; Dai, Yuxiang1,2; Wang, Mingguang1,2; Qi, Yang1,2 | |
| Corresponding Author | Wang, Mingguang(wangmg@imp.neu.edu.cn) ; Qi, Yang(qiyang@imp.neu.edu.cn) |
| 2021-03-15 | |
| Source Publication | CERAMICS INTERNATIONAL
 |
| ISSN | 0272-8842 |
| Volume | 47Issue:6Pages:8722-8727 |
| Abstract | 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. |
| Keyword | Bi-2212 superconducting films Heterointerface Lattice mismatch relaxation Interface structure Defects Tensile strain |
| Funding Organization | National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Postdoctoral Foundation of Northeastern University |
| DOI | 10.1016/j.ceramint.2020.11.233 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[61961116] ; China Postdoctoral Science Foundation[2018M631801] ; Postdoctoral Foundation of Northeastern University[20180301] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Ceramics |
| WOS ID | WOS:000621492900004 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/161023 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wang, Mingguang; Qi, Yang |
| Affiliation | 1.Northeastern Univ, Sch Mat Sci & Engn, Dept Mat Phys & Chem, Shenyang 110819, Liaoning, Peoples R China 2.Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Liaoning, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 4.China Med Univ, Sch Fundamental Sci, Dept Phys & Biophys, Shenyang 110122, Liaoning, Peoples R China |
| Recommended Citation 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. |
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