S. Katsuyama et al., EFFECT OF MECHANICAL GRINDING ON THE TRANSPORT CRITICAL-CURRENT DENSITY AND THE FLUX-PINNING FORCE OF A YBA2CU3OY-AG COMPOSITE SUPERCONDUCTOR, Journal of alloys and compounds, 236(1-2), 1996, pp. 165-170
The effect of mechanical grinding (MG) on the physical properties, esp
ecially the transport critical current density J(c) and the global pin
ning force F-p, of a YBa2Cu3Oy-Ag composite superconductor was examine
d. J(c) and F-p increase with the addition of Ag. J(c) of the samples
not exposed to MG treatment (no-MG-sample) shows a maximum value at ab
out 4 wt.% Ag, while that of the samples which are exposed to MG treat
ment (MG-sample) is almost constant, independent of Ag content. F-p of
the MG-sample is larger than that of the no- MG-sample. The density o
f the grain boundary and the configuration of Ag in the samples seem t
o be much affected by MG treatment.