Abstract
Superconducting YBCO thin films are grown in situ on polycrystalline GdBa 2NbO 6, a new cubic perovskite substrate by the pulsed laser ablation method and the optimum growth conditions have been established. The films exhibited (001) orientation of a YBCO orthorhombic phase. The films gave a T c (onset) of 92 K and T c(O) of 90 K.
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