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Control of epitaxial growth orientation in YBa2Cu3O7−δ films on vicinal (110) SrTiO3 substrates

Published online by Cambridge University Press:  31 January 2011

D. S. Linehan ,
E. P. Kvam ,
L. Hou  and
M. W. McElfresh
D. S. Linehan
Affiliation:
School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907
E. P. Kvam
Affiliation:
School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907
L. Hou
Affiliation:
Department of Physics, Purdue University, West Lafayette, Indiana 47907
M. W. McElfresh
Affiliation:
Department of Physics, Purdue University, West Lafayette, Indiana 47907
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Abstract

Films of Yba2Cu3O7−δ (YBCO) were grown on (001), exact and vicinal (110), and (111) SrTiO3 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] (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 c-axis orientation, corresponding to a single {013} 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 c-axis orientation.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 10 , October 1998 , pp. 2791 - 2799
Copyright
Copyright © Materials Research Society 1998

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