Growth of a/c grain boundary with well-defined facet in single-crystalline YBa2Cu3O7 − δ film by liquid phase epitaxy. (15th March 2017)

• Record Type: Journal Article
• Authors: Xiang, Hui; Qian, Jun; Guo, Linshan; Yao, Xin; Xiong, Jie; Peng, Wei; Rao, Qunli
• Is Part Of: Scripta materialia. Number 130(2017)
• Page Start: 54
• Page End: 58
• Publication Date: 2017-03-15
• Subjects: High temperature superconductor -- Josephson junction device -- a/c grain boundary structure -- Liquid phase epitaxy (LPE) -- Selective growth; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2016.11.002
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: A novel a / c grain boundary with well-defined facet of the YBa2 Cu3 O7 − δ (Y123) film featuring a single-crystalline nature was successfully grown by liquid phase epitaxy, differing from conventional ill-defined facet film possessing a polycrystalline characteristic by the prior art deposition techniques. Here the extremely low supersaturation as essential prerequisite was exploited on (110) NdGaO3 (NGO) substrates with partly-etched c -axis Y123 films. Based on the selective growth, preferred a -axis Y123 hetero-epitaxially grew on the bare NGO directly while c -axis Y123 homo-epitaxially proceeded on pre-existing Y123, consequently fabricating a distinct a / c grain boundary, which has great importance for fundamental studies and device applications. Graphical abstract: