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Progress towards a low-cost commercial coated conductor

Published online by Cambridge University Press:  18 March 2011

Suresh Annavarapu ,
Nguyet Nguyen ,
Sky Cui ,
Urs Schoop ,
Cees Thieme ,
Martin W. Rupich ,
Thomas Kodenkandath ,
Darren Verebelyi ,
Wei Zhang  and
Xiaoping Li
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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
Information
MRS Online Proceedings Library (OPL) , Volume 689: Symposium E – Materials for High-Temperature Superconductor Technologies , 2001 , E7.7
Copyright
Copyright © Materials Research Society 2002

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References

REFERENCES

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