We have found that in YBCO-Ag ceramic compounds Ag fills the intergranular space ('holes') without affecting Tc. Normal-state resistivity is decreased by approximately equals × 100 when adding up to 50 wt% Ag. Percolation analysis shows that the critical indices t,s are in agreement with 3D theoretical values, but pc is higher than expected. The critical current density Jc is enhanced by up to 50% in the samples containing approximately 10 wt% Ag, this enhancement corresponds to a maximum YBCO compactness in the samples.
Type
research article
Web of Science ID
WOS:A1989CG48900160
Authors
Publication date
1989
Published in
Volume
162-164
Issue
part 1
Start page
351
End page
352
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
March 26, 2007
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