Preparation of a double-layer YBa2Cu3O7-x/CeO2 film on a Hastelloy C276 metal substrate with buffer layers of LaMnO3/MgO/Gd2Zr2O7 by laser chemical vapor deposition

A double-layer YBa2Cu3O7-δ/CeO2 film was prepared on a Hastelloy C276 metal substrate with multi-buffer layers of LaMnO3/MgO/Gd2Zr2O7 by laser chemical vapor deposition. The CeO2 film showed a highly (100) preferred orientation with a full width at half maximum of 3.4° of the ω-scan on the (200) reflection and that of 5.0° of the ϕ-scan on the (220) reflection. The YBCO film showed a (110) preferred orientation with coexistence of c-axis-oriented grains. The (110)-oriented YBCO grains showed wedge-shaped morphology while the c-axis-oriented grains had dense surface and cross section.