Epitaxy of Y-Ba-Cu-O thin films grown on single-crystal MgO
Publication Type
Journal Article
Authors
Ramesh, Ramamoorthy, D. Hwang, T.S. Ravi, A. Inam, J.B. Barner, L. Nazar, S.W. Chan, C.Y. Chen, B. Dutta, T. Venkatesan, X.D. Wu
DOI
Abstract
The epitaxy of a thin-film Y-Ba-Cu-O (YBCO) superconductor deposited on a single-crystal [001] MgO substrate was examined by transmission electron microscopy. The large lattice mismatch (8-10%) in the basal plane of YBCO and MgO is accommodated mainly by the formation of a polycrystalline, mosaic structure. The grain boundaries correspond to unique crystallographic interfaces, determined by the crystal symmetry of the substrate and the thin film.
Journal
Applied Physics Letters
Volume
56
Year of Publication
1990
ISSN
00036951
Notes
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