Critical current density in the MgB2 nanoparticles prepared under autogenic pressure at elevated temperature

This Letter reports on obtaining MgB2 nanoparticles revealing an intra-granular enhanced critical current density (JC ⩾ 108 A/cm2) for the undoped sample. A rapid, single-stage, high yield, reproducible, straightforward, scalable, and competent approach at 750 °C is described for the synthesis of superconducting MgB2 nanoparticles.