A scaling law for the critical current density of weakly- and strongly-coupled superconductors, used to parameterize data from a technological Nb₃Sn strand

Abstract

There is currently no consensus on how best to parameterize the large volume of data produced in measuring the magnetic field (B), temperature (T) and strain (ε) dependence of the engineering critical current density (JE(B, T, ε)) for A15 superconducting strands. For the volume pinning force (FP) and the upper critical field BC2(T, ε), we propose