THE STUDY OF MICROCURRENT PATH OF HIGHLY C-AXIS-ORIENTED BI(2223) AG TAPES/

The microcurrent path of highly c-axis-oriented Bi(2223)/Ag tapes has been investigated by in-plane (I//ab plane) and out-of-plane (I//c axi s) transport measurements. It includes the dependence of transport cri tical current on temperatures close to T-c at different magnetic field s and the resistance transition broadening for applied fields H parall el to c-axis. It is found that the transport measurement results of in -plane and out-of-plane are quite different. We attribute the differen ces to the different microcurrent path. We think that the microcurrent path of the highly c-axis-oriented Bi(2223)/Ag tape is correlated wit h the direction of current injection.