In situ all-laser process for deposition of Y1Ba2Cu3O7−δ film on stainless steel involving use of Y-ZrO2-Ag composite as a barrier layer

Highly c-axis oriented good-quality (Tc of 88 K and Jc of 105 A/cm2 at 20 K) thin films of Y1Ba2Cu3O7−δ have been deposited on stainless-steel substrates by an in situ all-laser process involving use of laser-deposited Y-ZrO2-Ag composite film as a barrier layer. These results are compared with those obtained for the case of the use of a bilayer configuration of Ag and Y-ZrO2 to emphasize the importance of employing a composite film as a barrier layer.