scholarly journals Critical current density, irreversibility line, and flux creep activation energy in silver-sheathed Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub x/ superconducting tapes

1993 ◽  
Vol 3 (1) ◽  
pp. 1194-1196 ◽  
Author(s):  
D. Shi ◽  
Z. Wang ◽  
S. Sengupta ◽  
M. Smith ◽  
L.F. Goodrich ◽  
...  
Keyword(s):  
Activation Energy ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Irreversibility Line ◽  
Flux Creep ◽  
Superconducting Tapes ◽  
Creep Activation Energy

Enhancement of Pinning Energy and Critical Current Density in Tl2CaBa2Cu2O8 Films by Proton Irradiation

1991 ◽  
Vol 235 ◽  
Author(s):  
M. E. Reeves ◽  
B. D. Weaver ◽  
G. P. Summers ◽  
R. J. Soulen ◽  
W. L. Olson ◽  
...  
Keyword(s):  
Thin Films ◽  
Radiation Dose ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Defect Structure ◽  
Proton Irradiation ◽  
Irreversibility Line ◽  
Pinning Energy

ABSTRACTMeasurements are presented which show the effect of proton irradiation on the irreversibility line and critical current in Tl2 CaBa2Cu2O8 thin films. These data show that the irreversibility line is dependent on the defect structure and that the pinning energy is increased by proton irradiation. This leads to an increase in the critical current density at 60 K for the lowest radiation dose. Further irradiation reduces the critical current, even while the irreversibility line is enhanced.

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