Penetration loss in BSCCO tape without transport current

Abstract

A penetration loss formula for superconducting tapes has been derived in our previous work. In this paper, the orientation of the magnetic field is considered in the formula. This formula includes the E-j characteristics represented with a power law and the magnetic field dependence of the critical current density. The analytical estimations with the formula are compared with experimental results on the magnetization loss for a BSCCO tape with no transport current for several field orientations. The losses estimated by this formula agree well with the experimental results, when the magnetic field is applied parallel or perpendicular to the tape face. For the magnetic field with another field orientation, the experimental results are smaller than the analytical predications, because of the demagnetizing effect.