Transport Critical Current Density of (Bi_1.6Pb_0.4)Sr₂Ca₂Cu₃O₁₀ Ceramic Superconductor with Different Nanosized Co₃O₄ Addition

Figure 5

Electrical resistance versus temperature curve for (a) nonadded sample and 10 nm Co₃O₄ added samples, (b) 30 nm Co₃O₄ added samples, and (c) 50 nm Co₃O₄ added samples.

(a)

(b)

(c)