The superconducting YBa2Cu3O7-δ/CeO2/NiO multilayer structure was grown in situ by pulsed-laser
deposition on biaxially textured Ni89V11 non-magnetic
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 mTorr
oxygen pressure and at 700 °C. The critical current density of
0.6 MA cm-2, at 77 K and zero magnetic field, was obtained
for 0.7 µm thick YBa2Cu3O7-δ films.
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