Physics – Condensed Matter – Superconductivity
Scientific paper
2002-05-20
Supercond. Sci. Technol. 16 (2003) L4-L6
Physics
Condensed Matter
Superconductivity
6 pages, 4 figures, 1 table
Scientific paper
10.1088/0953-2048/16/1/102
In this letter, we report the results of transport Jc of solenoid coils upto 100 turns fabricated with Cu-sheathed MgB2 wires using a wind-reaction in-situ technique. Despite the low density of single core and some reaction between Mg and Cu-sheath, our results demonstrate the decrease in transport Jc with increasing length of MgB2 wires is insignificant. Solenoid coils with diameter as small as 10 mm can be readily fabricated using a wind-reaction in-situ technique. The Jc of coils is essentially the same as in the form of straight wires. A Jc of 133,000 A/cm2 and 125,000 A/cm2 at 4 K and self field has been achieved for a small coil wound using Cu-sheathed tape and Cu-sheathed wire respectively. These results indicate that the MgB2 wires have a great potential for lage scale applications
Dou Shi Xue
Horvat Joseph
Soltanian Saeid
Tomsic Matija
Wang Xue-Lei
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