Enhancement of JC-B Properties in MoSi2 doped MgB2 tapes

Details Enhancement of JC-B Properties in MoSi2 doped MgB2 tapes Enhancement of JC-B Properties in MoSi2 doped MgB2 tapes

2006-02-17

arxiv.org/abs/cond-mat/0602402v1

Supercond. Sci. Technol. 19 (2006) 699-702

Physics

Condensed Matter

Superconductivity

13 pages, 5 figures, to be published

Scientific paper

10.1088/0953-2048/19/8/003

MoSi2 doped MgB2 tapes with different doping levels were prepared through the in-situ powder-in-tube method using Fe as the sheath material. Effect of MoSi2 doping on the MgB2/Fe tapes was investigated. It is found that the highest JC value was achieved in the 2.5 at.% doped samples, more than a factor of 4 higher compared to the undoped tapes at 4.2 K, 10 T, then further increasing the doping ratio caused a reduction of JC. Moreover, all doped tapes exhibited improved magnetic field dependence of Jc. The enhancement of JC-B properties in MoSi2 doped MgB2 tapes is attributed to good grain linkage and the introduction of effective flux pining centers with the doping.

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