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Fabrication by Inclined-Substrate Deposition of Biaxially Textured Buffer Layer for Coated Conductors

Published online by Cambridge University Press:  18 March 2011

U. Balachandran ,
B. Ma ,
M. Li ,
R. E. Koritala ,
B. L. Fisher ,
R. A. Erck  and
S. E. Dorris
U. Balachandran
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439
B. Ma
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439
M. Li
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439
R. E. Koritala
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439
B. L. Fisher
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439
R. A. Erck
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439
S. E. Dorris
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439
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Abstract

Inclined substrate deposition (ISD) offers the potential for rapid production of high-quality biaxially textured buffer layers suitable for YBCO-coated conductors. We have grown biaxially textured MgO films by ISD at deposition rates of 20–100 Å/sec. Columnar grain structures with a roof-tile-shaped surface were observed in the ISD-MgO films. X-ray pole figure analysis revealed that the (002) planes of the ISD-MgO films are titled at an angle from the substrate normal. A small phi-scan full-width at half maximum (FWHM) of ≈9° was observed on MgO films deposited at an inclination angle of 55°. YBCO films were also grown on ISD-MgO-buffered Hastelloy C276 substrates by pulsed laser deposition. We obtained a critical current density of ≈2 × 105 A/cm2 at 77 K in self-field on 0.5-μm-thick, 0.5-cm-wide, 1-cm-long samples. This work has demonstrated that biaxially textured ISD MgO buffer layers deposited on metal substrates are promising candidates for fabrication of high-quality YBCO-coated conductors.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 689: Symposium E – Materials for High-Temperature Superconductor Technologies , 2001 , E9.1
Copyright
Copyright © Materials Research Society 2002

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References

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