MgB2 hollow wires have been produced with a new technique which uses a conventional wire manufacturing process but is applied to composite billets containing the elemental B and Mg precursors in an appropriate shape. The technique has been applied to the manufacture of both monofilamentary and multifilamentary wires of several tens meters length. The superconducting transport properties of the MgB2 hollow wires have been measured in magnetic field and in the temperature range from 4.2 to 30 K. Promising results are obtained, which indicate the possibility of application of these wires as superconductors in the temperature range of 15-30 K and at medium-high values of magnetic field.
@article{arxiv.cond-mat/0207488,
title = {High performance new MgB2 superconducting hollow wires},
author = {G. Giunchi and S. Ceresara and G. Ripamonti and A. DiZenobio and S. Rossi and S. Chiarelli and M. Spadoni and R. Wesche and P. L. Bruzzone},
journal= {arXiv preprint arXiv:cond-mat/0207488},
year = {2009}
}
Comments
14 Pages, 10 Figures, Paper presented at BOROMAG, Genova 17-19 June 2002 and submitted to Supercond. Sci. Technol