EXPERIMENTAL-STUDY OF THE INTERGRANULAR MAGNETIZATION OF (BI,PB)(2)SR2CA2CU3O10+X SUPERCONDUCTORS

We have done a systematic study of the magnetization of granular (Bi,P b)(2)Sr2Ca2Cu3O10+x superconductors at 77 K. Main attention was paid t o the behavior of intergranular magnetization currents. The experiment s covered flux-distribution and magnetic-relaxation measurements using Hall sensor magnetometry. These were supplemented by standard magneti zation and hysteresis-loss measurements. The magnetization of the inte rgranular system was found to have its own dynamics in each case of th e measurements. The behavior, however, was to some extent similar to t hat of classical hard type-II superconductors.