Epitaxial growth of YBa2Cu3O7-delta on Ni89V11 non-magnetic biaxially textured substrate using NiO as butter layer

The superconducting YBa2Cu3O7-delta/CeO2/NiO multilayer structure was grown in situ by pulsed-laser deposition on biaxially textured Ni89V11 non-magne tic alloy. The role of vanadium is to decrease the Curie temperature of Ni and to favour the formation of oriented NiO. The (00l)NiO buffer layer has been formed by the controlled oxidation of the Ni-V substrate under 10 mTor r oxygen pressure and at 700 degreesC. The critical current density of 0.6 MA cm(-2), at 77 K and zero magnetic field, was obtained for 0.7 mum thick YBa2Cu3O7-delta films.