Abstract
As-deposited superconducting Y-Ba-Cu-O films have been grown on stainless steel substrates by the plasma assisted laser deposition technique. Low interfacial diffusion of iron at the 550°C growth temperature enables us to produce superconducting films with critical temperatures up to 83 K and critical currents up to ∼4 × 103 A/cm2 (40 K). Dependence of the superconducting properties of the Y-Ba-Cu-O films on the surface condition of the mirror finished stainless steel substrate has been studied. Critical temperature and critical current of the films have been improved by heat-treating the substrate and incorporating buffer layers. Variation of the critical current with the bend radii of the film is discussed.
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Witanachchi, S., Patel, S., Zhu, Y.Z. et al. Flexible stainless steel foil as a substrate for superconducting Y-Ba-Cu-O films. Journal of Materials Research 5, 717–720 (1990). https://doi.org/10.1557/JMR.1990.0717
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DOI: https://doi.org/10.1557/JMR.1990.0717