Effect of aromatic hydrocarbon addition on in situ powder-in-tube processed MgB2 tapes

Details Effect of aromatic hydrocarbon addition on in situ powder-in-tube processed MgB2 tapes Effect of aromatic hydrocarbon addition on in situ powder-in-tube processed MgB2 tapes

2005-09-05

arxiv.org/abs/cond-mat/0509086v1

Physics

Condensed Matter

Superconductivity

6 pages, 4 figures

Scientific paper

10.1088/0953-2048/19/2/004

We fabricated in situ powder-in-tube processed MgB2/Fe tapes using aromatic hydrocarbon of benzene, naphthalene, and thiophene as additives, and investigated the superconducting properties. We found that these aromatic hydrocarbons were very effective for increasing the Jc values. The Jc values of 20mol% benzene-added tapes reached 130A/mm2 at 4.2K and 10T. This value was almost comparable to that of 10mol% SiC-added tapes and about four times higher than that of tapes with no additions. Microstructure analyses suggest that this Jc enhancement is due to both the substitution of carbon for boron in MgB2 and the smaller MgB2 grain size.

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