B. Barbara, A.P. Malozemoff
Journal of The Less-Common Metals
We investigated the stabilization of magnetic flux in a high-temperature superconductor (a proton-irradiated Y1Ba2Cu 3O7 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.
B. Barbara, A.P. Malozemoff
Journal of The Less-Common Metals
A.R. Williams, A.P. Malozemoff, et al.
Journal of Applied Physics
M. Konczykowski, A.P. Malozemoff, et al.
Physica C: Superconductivity and its applications
A.P. Malozemoff, J.C. De Luca
Journal of Applied Physics