Dependence AC magnetization losses in thin film superconductor tape on Jc distribution along tape width

Analytical formulas derived by Norris [J. Phys. D 3 (1970) 489] and Brandt et al. [Phys. Rev. B 48 (1993) 12893] are often used to calculate the AC transport current and magnetization losses in HTS strip conductors. In those formulas, homogeneous distribution of critical sheet current density σc in the strip is assumed. However, it is considered that σc in actual HTS strips are distributed inhomogeneously and that deviations of the measured AC loss data of actual HTS strips from those formulas are due to the inhomogeneous σc distributions. We derived a semi-analytical method to calculate the transport current and magnetization losses in an HTS strip with inhomogeneous σc distribution. The validity of the semi-analytical method is shown by comparing the experimental and analytical data.