Aligned single crystal superconducting MgB2 nanowires were synthesized on nano-channel-Al2O3 substrates. At first, aligned single crystal B nanowires were prepared by chemical vapour deposition. Then Mg was incorporated in a sealed vacuum quartz tube to form aligned single crystal superconducting MgB2 nanowires. The diameters of the MgB2 nanowires were in the range of 20–150nm. Finally, there were indications that the nanowires had a superconducting transition temperature of about 33K.

Aligned Single Crystal MgB2 Nanowires. Q.Yang, J.Sha, X.Ma, Y.Ji, D.Yang: Superconductor Science and Technology, 2004, 17, L31-3