Remanent magnetization of high-temperature Josephson junction arrays
  In this work we study the remanent magnetization exhibited by tridimensional disordered high-Tc Josephson junction arrays excited by an AC magnetic field. The effect, as predicted by numerical simulations and previously verified for a low-Tc array of Nb, occurs in a limited range of temperatures. We also show that the magnetized state can be excited and detected by two alternative experimental routines. 
W. A. C. Passos, P. N. Lisboa-Filho and W. A. Ortiz