| abstract |
Tape 4 ′ based on a superconducting oxide containing Cu-O, characterized in that it comprises a substrate 4 made of flexible metallic or composite material, of rectangular cross section, provided on at least one of its faces with a film free of cavities, of perovskite-type superconducting oxide with congruent or quasi-congruent fusion, or with peritectic decomposition close to a eutectic point, the thickness of said film being between 1 mum and 100 mum, the orientation of the axis C superconducting crystals being perpendicular to said face of said substrate. |