Figure 1

SEM (a and b) and EDX analysis (c and d) of (Bi, Pb)-2223 superconductor compacted at P = 0.3 and 1.9 GPa, respectively.

SEM (a and b) and EDX analysis (c and d) of (Bi, Pb)-2223 superconductor compacted at P = 0.3 and 1.9 GPa, respectively.