In-plane aligned YBCO thick films on {110} rolled and single crystal silver by ultrasonic mist pyrolysis

An ultrasonic mist pyrolysis system has been used to fabricate thick films of YBa2CU3O7-x (YBCO) on rolled and single crystal silver substrates, The substrates were heated to 900 degrees C and nitrate solutions of the constituent cations were sprayed using a nitrogen carrier gas. Highly c-asis aligned YBCO films were obtained by deposition at a rate of similar to 1 mu m per minute. Phase pure YBCO formed up to a limit of similar to 6 mu m. For thicker films, BaCuO2 and Y2BaCuO5 also formed. On {110} oriented single crystal silver, the films showed in-plane alignment with a four fold symmetry, and the FWHM in the azimuthal direction of the main peaks was similar to 3 degrees. On the polycrystalline substrate the in-plane texture showed a similar to 20 degrees FWHM, equivalent to that of the {110}<110> textured silver substrate. The onset of the superconducting transition was measured as similar to 90.1 degrees C for a sample with a film thickness of similar to 5 mu.m.