YBa2Cu3O(7-x) thin film growth on single crystal and polycrystalline yttria-stabilized zirconia.

摘要

In this paper, we report on the growth of Y-123 thin films on single crystal and randomly-oriented polycrystalline YSZ substrates. High quality epitaxial Y-123 thin films were grown on (100) YSZ in order to identify the factors that determine the optimum growth conditions for this substrate material. In addition, we have grown Y-123 thin films that are highly c-axis oriented with a zero resistance T(sub co) between 85 K and 89 K on both rigid and flexible randomly-oriented polycrystalline YSZ. Critical current densities in excess of 10(sup 4) A/cm(sup 2) at 77 K in zero magnetic field were obtained for the films on rigid polycrystalline substrates. According to recent work, this value for J(sub c) approaches what appears to be the upper limit for J(sub c) when large-angle grain boundaries are present in the film. 15 refs., 6 figs.