Epitaxial Pb ( Zr_0.52Ti_0.48) O₃/Y₁Ba₂Cu₃O_7-x Heterostructure Prepared by Pulsed Laser Deposition

C-axis oriented Y₁Ba₂Cu₃O_7-x(YBCO) thin films and PbZr_0.52Ti_0.48O₃(PZT)/(YBCO) heterostructures were deposited on single-crystal LaAIO₃ by Nd:YAG pulsed laser deposition. The results showed that the YBCO films exhibited superconducting transition temperature above 86 K and ion beam channeling minimum yields x_min of 49%, indicating the relatively good quality of YBCO films deposited on the LaAIO₃ substrate. The PZT films in situ grown on the YBCO films were epitaxially c-axis oriented with a saturation polarization and remanence as high as 57μC/cm² and 39μC/cm² (at 204 kV/cm), respectively. The coercive field of PZT films is about 55 kV/cm.