Structurally homogeneous MgB2 superconducting wires through economical wet mixing process

Abstract We evaluate the effects of the mixing process between the starting materials on the structural and superconducting properties of carbon-doped MgB 2 wires. The critical current density, n -value, amount of MgO, and critical temperature are obviously dependent on the mixing process, while the microstructure, i.e., grain size, is not sensitive. In our study, the wet-mixing process in toluene enables more homogenous mixing between the starting materials, resulting in superior J c and n -value.