Record current-carrying performance of iron-based superconducting wires enabled using dense dislocation asymmetric stress engineering

https://www.eurekalert.org/news-releases/1104659

"iron: excellent properties/ low cost, but brittle lattice causes difficulty using high-density flux pinning centers required for carrying large, lossless currents... overcome utilizing asymmetric stress field to engineer flux pinning centers: synergistically controlled hydrostatic pressure/ shear stress using scalable extrusion...  current density rose from 1.5×10⁵ A/cm² to 4.5×10⁵ A/cm², while at 30 T reached 2.1×10⁵ A/cm², 5X higher (>30 T WM5 water-cooled magnet provided magnetic field)... high-field: fusion/ particle accelerators"