ISSN:
1572-9605
Keywords:
fish-tail effect
;
neutron irradiation
;
critical current density
;
Lindemann number
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract The evolution of the critical current density of Li-doped YBa2Cu3O7−x polycrystalline samples submitted to neutron irradiation is investigated as function of magnetic field (0 ≤ B ≤ 6 T) temperature (5 ≤ T ≤ 85 K) and neutron fluence (0 ≤ Φ ≤ 9.98 × 1017 cm−2). At fluences lower than 1017 cm−2, a second peak in j s vs. B dependence is present (fish-tail effect). Its magnitude decreases with increasing the fluence. Above 1017 cm−2, the second peak of current density completely disappears; instead, the logarithmic susceptibility shows a second peak at a certain field B infl. A dependence of B infl on fluence is proposed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1007860431003
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