TRANSPORT AND MAGNETIC AC LOSSES IN AG TL-1223 TAPE AND THE EFFECT OFMECHANICAL DAMAGE/

In this paper we present the results of AC loss measurements on silver clad monocore tapes of Tl-1223 prepared by the powder-in-tube method. Losses arising from an external AC magnetic field are compared with t hose generated by AC transport currents (self-field losses). Critical current densities are derived from magnetic loss data and compared wit h those measured by the four point transport method. It was found that mechanically induced stresses (introduced by bending) only have a sig nificant effect on the transport losses, via the critical current degr adation. Such changes are not seen in measured magnetic losses, which are independent of mechanical stress, and remain unchanged, at least i n the stress range used in our experiment.