Fig. 3: Magnetic field dependence of the critical current density for Ta–Nb–Hf–Zr–Ti HEA SC thin films.
From: High critical current density and high-tolerance superconductivity in high-entropy alloy thin films
a, b Magnetic field dependence of the critical current density (Jc) for HEA SC thin films at 2.0 and 4.2 K, respectively. All the films show remarkably large Jc values at 0 T compared with that of the bulk HEA SC sample, as well as promising field performance. The low-field Jc at 2.0 K is lower than that at 4.2 K because of the considerable flux jump at 2.0 K. The red dashed line marks Jc = 100 kA cm−2, which is a common benchmark for large-scale applications such as high-field SC magnets. c Relative levels of Jc at 2.0 and 4.2 K at 1 T show that HEA superconductors are available for widespread applications.
