Authors
R Ramesh, D Hwang, TS Ravi, A Inam, JB Barner, L Nazar, SW Chan, CY Chen, B Dutta, T Venkatesan, XD Wu
Publication date
1990/5/28
Journal
Applied physics letters
Volume
56
Issue
22
Pages
2243-2245
Publisher
American Institute of Physics
Description
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.
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R Ramesh, D Hwang, TS Ravi, A Inam, JB Barner… - Applied physics letters, 1990