Fabrication of textured Bi-Sr-Ca-Cu-O thick film by electrophoretic deposition

Bi-Sr-Ca-Cu-O thick films (≊5–40 μm) were electrophoretically deposited on silver foil using ethyl alcohol as the suspending liquid. The deposition voltage was ≊70 V/cm and the current ≊550 μA/cm2. X-ray diffraction of the as-deposited sample shows texturing. This texturing was enhanced by pressing the film uniaxially at ≊82 MPa. Samples were sintered at 810 °C in a 10% oxygen-in-argon atmosphere. Liquid at the sintering temperature promotes textured grain growth. The critical current density (Jc) of the film determined by magnetic measurement at 5 K in a 2 kOe field is ≊1.3×104 A/cm2.