Targeted Selection and Characterisation of Contemporary HTS Wires for Specific Applications

Transport Current Measurement of $I_{c}(T, B,\theta)$ and $n(T, B,\theta)$ for a Bulk REBCO Superconductor

“…Below T c , after an initial sharp increase, both I c0 and n 0 increase, approximately linearly, as the temperature decreases. This trend has been previously observed for many HTS wire samples [37]- [44]. To ensure reliability and check for sample degradation, measurements were repeated and found to be consistent.…”

“…This specific system employs an HTS magnet and rotating sample probe to measure I c and n for transport currents up to 1.6 kA, at B ≤ 8 T, θ = −360 • to +360 • and T ≥ 15 K [35], [36]. Automated measurements enable the scanning of a large parameter space, and it has been used extensively to characterise coated-conductor HTS tapes [37]- [43] and BSCCO wires [44]. However, measurements of bulk HTS samples have not previously been attempted in this system.…”

Role of asymmetric critical current on magnetization loss characteristics of (RE)Ba2Cu3O7−d coated conductors at various temperatures

“…It is interesting to see in Fig. 3 I c (B) values in the low-B region (,0:05 T) for some field angles at all three temperatures are slightly higher or lower than the self-field I c0 with B ¼ 0 T. This may be caused by the asymmetric in-plane field dependence of the critical current; 8,32 i.e., there might be different barriers when vortices travel from the superconducting interface into the substrate interface. 32 Another possible reason might be the superposition of the applied magnetic field and the self-field generated by the transport DC current.…”