We report on the preparation of high J c YBCO coated conductors on non-magnetic Ni-W substrates. In order to minimize the deleterious effects of tungsten oxide formation on the epitaxial growth of oxide buffer layers and YBCO films, an electrodeposition approach has been developed to epitaxially grow an about 2 µm Ni layer (Ed-Ni layer) on Ni-3 at% W tapes. With this method, the surface for epitaxy of the first oxide seed layer is not exposed to the Ni-W surface, and high quality CeO 2 /yttria-stabilized zirconia/CeO 2 buffer layers and YBCO films have been grown on the Ed-Ni/Ni-3 at% W substrates by pulsed laser deposition. A critical current density, J c , of 1.49 MA cm −2 has been achieved at 75.2 K and in a magnetic field of 83 mT.
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