Abstract
We introduced BaHfO_3 (BHO) artificial pinning centers in YBa_2Cu_3O_7 (YBCO) thin films by a solution method and their crystal structures and superconducting property were examined. The films were calcined at 430℃ in oxygen atmosphere and crystallized at 780℃ in low oxygen atmosphere. As the results of XRD, peaks corresponded to BHO were observed in the films. No large degradation of crystalline are recognized on the YBCO films after BHO introducing. Superconducting transition temperature, T_C, and critical current density, J_C, were more than 90K and 3.5 MA/cm^2, respectively, which were as high as YBCO films with BaZrO_3(BZO). Consequently, it was proved that YBCO films with BHO could be fabricated by solution method.
