ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We investigated the stabilization of magnetic flux in a high-temperature superconductor (a proton-irradiated Y1Ba2Cu3O7 crystal), by operating with subcritical current density J. Using the thermal history to obtain an induced current density J≤Jc, we observed a drastically reduced relaxation rate dM/dt (M=magnetization), after "flux creep annealing.'' The results show that the field gradient ∼J∼M determined the relaxation rate, independent of the sample's H-T history, in agreement with recent theory.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.105918