FABRICATION OF TEXTURED BI-SR-CA-CU-O THICK-FILM BY ELECTROPHORETIC DEPOSITION

Bi-Sr-Ca-Cu-O thick films (almost-equal-to 5-40-mu-m) were electrophoretically deposited on silver foil using ethyl alcohol as the suspending liquid. The deposition voltage was almost-equal-to 70 V/cm and the current almost-equal-to 550-mu-A/cm2. X-ray diffraction of the as-deposited sample shows texturing. This texturing was enhanced by pressing the film uniaxially at almost-equal-to 82 MPa. Samples were sintered at 810-degrees-C in a 10% oxygen-in-argon atmosphere. Liquid at the sintering temperature promotes textured grain growth. The critical current density (J(c)) of the film determined by magnetic measurement at 5 K in a 2 kOe field is almost-equal-to 1.3 x 10(4) A/cm2.