2002/05/20 by S. Soltanian, J. Horvat, Xiaolin Wang +4
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Superconductivity in MgB2 and Alloys #cond-mat.mtrl-sci #cond-mat.supr-con
paper · pdf · doi:10.1088/0953-2048/16/1/102
published as Supercond. Sci. Technol. 16 (2003) L4-L6 · 6 pages, 4 figures, 1 table
arxiv created 2002/05/20 · openalex publication_date 2002/12/10 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
In this letter, we report the results on transport J c of solenoid coils of up to 100 turns fabricated with Cu-sheathed MgB 2 wires using a wind-reaction in situ technique. Despite the low density of the single core and some reaction between the Mg and Cu sheaths, our results demonstrate that the decrease in transport J c with increasing length of MgB 2 wires is insignificant. Solenoid coils with diameter as small as 10 mm can be readily fabricated using a wind-reaction in situ technique. The J c of the coils is essentially the same as that of comparable straight wires. A J c of 133000 A cm −2 and 125000 A cm −2 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 MgB 2 wires have a great potential for large-scale applications.