Electrical Transport Properties of (Bi_1.6Pb_0.4Sr₂Ca₂Cu₃O₁₀)/Ag Tapes with Different Nanosized MgO

Figure 2

SEM micrographs of (Bi, Pb)-2223(MgO)_x/Ag tapes (a) 𝑥=0 wt.%, (b) 𝑥=0.10 wt.% of 20 nm MgO, and (c) 𝑥=0.01 wt.% of 40 nm MgO. The dots refer to Mg.

(a)

(b)

(c)