Electrical Transport and Lowered Percolation Threshold in YBa₂Cu₃O_7−δ-Nano-YBa₂ZrO_5.5 Composites

Figure 3

SEM images of different vol.% of nano-YBZO mixed YBCO superconductor ((a) = 0%, (b) = 10, (c) = 30%, (d) = 50%, (e) = 70%, and (f) = 100%).

(a)

(b)

(c)

(d)

(e)

(f)