Control of epitaxial growth orientation in YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} films on vicinal (110) SrTiO{sub 3} substrates
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907 (United States)
- Department of Physics, Purdue University, West Lafayette, Indiana 47907 (United States)
Films of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} (YBCO) were grown on (001), exact and vicinal (110), and (111) SrTiO{sub 3} single crystal substrates by pulsed laser deposition, and evaluated by x-ray diffraction and scanning force microscopy (AFM). It was observed that the YBCO was always epitaxially aligned to the substrate with the [001] ({ital c}-axis) parallel to a substrate cube axis direction. For the exact (001), (110), and (111) surfaces, there were one, two, and three orientations, respectively. For the vicinal (110) surfaces, however, there was usually only one discernible {ital c}-axis orientation, corresponding to a single {l_brace}013{r_brace} film surface orientation. The reduction of the (110) surface twofold symmetry by use of a vicinal substrate thus allowed controlled growth of a YBCO single crystal with an inclined {ital c}-axis orientation. {copyright} {ital 1998 Materials Research Society.}
- OSTI ID:
- 664674
- Journal Information:
- Journal of Materials Research, Vol. 13, Issue 10; Other Information: PBD: Oct 1998
- Country of Publication:
- United States
- Language:
- English
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