Steady state propagation of a magnetic perturbation along a monofilament superconducting wire in circumstances of thermomagnetic instability was investigated. At temperature T=4.2K and magnetic field B=0.5-0.7T the propagation velocity is v = 2.5 - 3.5 km/sec in NbTi wire and this one exceeds a 9 km/sec in NbZr wire.
Cite
@article{arxiv.cond-mat/0304264,
title = {Thermomagnetic instability evolution along a superconducting wire},
author = {G. L. Dorofeev and E. P. Krasnoperov and Yu. D. Kuroedov and V. S. Vyatkin},
journal= {arXiv preprint arXiv:cond-mat/0304264},
year = {2016}
}