The effect of intermediate layer densification on the critical current of a Bi-2223 superconducting joint

Abstract The effect of intermediate layer densification on the critical current ( I c ) Bi-2223 superconducting joints was quantitatively studied. First, we evaluated phase purity, density, and intergrain density J thick film samples simulating layer. were uniaxially pressed to increase density. After two heat treatments film, an in achieved. Second, fabricated by synthesizing between tapes. Applying a uniform uniaxial pressure joint resulted formation homogeneous structure. This process enables reproducible fabrication with high n values. increased pressing (IP) treatments. However, at pressures can mechanically damage filaments tapes, leading decrease . Sample characterization showed that optimum IP range produce 1.5–2 × 10 8 Pa. We confirmed densified joints. Our experimental results analyses reveal increases