Copper sheathed MgB2 wires, prepared by an in-situ process, were exposed to neutron radiation in order to introduce defects into the superconductor. The high level of disorder (4.6x10^-2 dpa) leads to a decreases of the transition temperature by more than 4 K, but to an increase of the slope of the irreversibility line, thus resulting in higher irreversibility fields at low temperatures. The transport currents are significantly enhanced at 4.2 K for fields above 2 T.
Revised: March 19, 2003 |
Published: July 1, 2002
Citation
Eisterer M., B.A. Glowacki, H.W. Weber, L.R. Greenwood, and M. Majoros. 2002.Enhanced Transport Currents in Cu-Sheathed MgB2 Wires.Superconductor Science & Technology 15.PNNL-SA-31803.