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Progress towards a low-cost commercial coated conductor

Published online by Cambridge University Press:  18 March 2011

Suresh Annavarapu
Affiliation:
Corporate Research & Development, American Superconductor, Westborough, MA 01581, U.S.A.
Nguyet Nguyen
Affiliation:
Corporate Research & Development, American Superconductor, Westborough, MA 01581, U.S.A.
Sky Cui
Affiliation:
Corporate Research & Development, American Superconductor, Westborough, MA 01581, U.S.A.
Urs Schoop
Affiliation:
Corporate Research & Development, American Superconductor, Westborough, MA 01581, U.S.A.
Cees Thieme
Affiliation:
Corporate Research & Development, American Superconductor, Westborough, MA 01581, U.S.A.
Martin W. Rupich
Affiliation:
Corporate Research & Development, American Superconductor, Westborough, MA 01581, U.S.A.
Thomas Kodenkandath
Affiliation:
Corporate Research & Development, American Superconductor, Westborough, MA 01581, U.S.A.
Darren Verebelyi
Affiliation:
Corporate Research & Development, American Superconductor, Westborough, MA 01581, U.S.A.
Wei Zhang
Affiliation:
Corporate Research & Development, American Superconductor, Westborough, MA 01581, U.S.A.
Xiaoping Li
Affiliation:
Corporate Research & Development, American Superconductor, Westborough, MA 01581, U.S.A.
Qi Li
Affiliation:
Corporate Research & Development, American Superconductor, Westborough, MA 01581, U.S.A.
Mariappan Paranthaman
Affiliation:
Chemical & Analytical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
Amit Goyal
Affiliation:
Metals & Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
Claudia Cantoni
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
Matthew M. Kowalewski
Affiliation:
Metals & Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
Fred A. List
Affiliation:
Metals & Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
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Abstract

YBCO films prepared from metal trifluoroacetate (TFA) precursors on oxide-buffered textured non-magnetic substrates have achieved performance levels equaling that on oxide buffered textured Ni substrates. Critical current densities of 0.7 MA/cm2 to 1.0 MA/cm2 have been achieved in 0.4 µm thick YBCO films on short-length of CeO2/YSZ/Y2O3/Ni/Ni-13wt%Cr substrates. High-quality epitaxial buffers comprising a Ni layer, Y2O3 seed, YSZ barrier and CeO2 cap layers have been deposited over meter long tapes of deformation textured Ni and Ni-13%Cr using reel-to-reel processes. High-performance TFA-based YBCO films have been deposited on 0.1 m to 0.3 m lengths of these oxide buffered substrates using reel to reel processes. Critical current densities up to 1.0 MA/cm2 have been achieved in 0.4 µm thick YBCO films on CeO2/YSZ/Y2O3/Ni substrates. Using multiple coats of the metal trifluoroacetate precursors, thicker YBCO films have been demonstrated on oxide buffered substrates. Critical currents in excess of 100A/cm-width have been achieved for 1.2 µm -1.6 µm thick YBCO films on short lengths of CeO2/YSZ/Y2O3/Ni substrates.

Type
Research Article
Copyright
Copyright © Materials Research Society 2002

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References

REFERENCES

1. Rupich, M. W., Li, Q., Annavarapu, S., Thieme, C., Zhang, W., Prunier, V., Paranthaman, M., Goyal, A., Lee, D. F., Specht, E. D. and List, F. A., IEEE Trans. On Appl. Supercond., 11, 1, 29272930, (2000)CrossRefGoogle Scholar
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