NdBaCuO thin films for Josephson devices

We have prepared NdBa 2Cu 3O 7-δ (NBCO) Josephson junctions on SrTiO 3 (STO) bicrystal substrates with a misorientation angle Ω = 24°. The superconducting films were fabricated by pulsed laser deposition (PLD). To increase the superconducting properties of the NBCO films, we used PrBa 2Cu 3O 7-δ (PBCO) as a template layer. The highest T c of these bilayers was about 94 K, about 8 K higher than for our single NBCO films. The Josephson junctions showed a clear resistively and capacitively shunted junction (RCSJ) type behaviour.