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An epitaxial Y2O3/YSZ/CeO2 buffer architecture has been prepared using pulsed laser deposition on cube texture Ni–3 at.% W/Ni–10 at.% Cr–1.5 at.% Al and Ni–5 at.% W/Ni–10 at.% W composite tapes. The buffer layer growth was studied in detail and revealed good texture transfer throughout the structure, similar to standard Ni–5 at.% W substrates. YBCO layers were successfully deposited on the buffered tapes and compared to films grown on SrTiO3 single crystals. A superconducting transition temperature of about 90 K with a small transition width was observed on all metal substrates. A critical current density Jc of about 1 MA cm−2 was measured at 77 K in a self-field. It was found that Jc is mainly limited by the grain boundary network in magnetic fields below 4 T, whereas similar values as on SrTiO3 single crystals were measured at higher fields.

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