Abstract
Data are presented on the contact resistance between YBCO and arc sprayed silver and copper. Contact resistivities of 3.4 × 10-7 Ωcm2 (Ag on YBCO) and 6 × 10-3 Ωcm2 (Cu on YBCO)) are obtained at 80K without annealing. With annealing, Ag on YBCO resistivities of 10-9 Ωcm2 are obtained. A new technique for measuring these very low contact resistances is outlined. Measurements on Cu and Ag spray coatings on a 10 molar% Ag on YBCO matrix were also carried out, the addition of Ag to YBCO reduced the Cu contact resistivity. These results are interpreted in terms of a percolative Ag path allowing current to bypass a degraded surface region of YBCO.
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© 1990 Plenum Press, New York
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Ashworth, S.P., Beduz, C., Harrison, K., Scurlock, R.G., Yang, Y. (1990). Investigation of the Interface Between a Normal Metal and High Temperature Superconductor. In: Reed, R.P., Fickett, F.R. (eds) Advances in Cryogenic Engineering Materials . An International Cryogenic Materials Conference Publication, vol 36. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-9880-6_56
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DOI: https://doi.org/10.1007/978-1-4613-9880-6_56
Publisher Name: Springer, Boston, MA
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