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A cheap liquid additive from acetone for strong in-field Jc enhancement in MgB2 conductors

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 نشر من قبل Yanwei Ma
 تاريخ النشر 2008
  مجال البحث فيزياء
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We report on significant flux pinning enhancement in MgB2/Fe tapes that has been easily obtained by a simple and cheap route using acetone as both an efficient ball-milling medium and liquid additive through the in situ method. Results showed that the highly reactive C released from the decomposition of the acetone substituted into B sites, accompanied by the grain refinement effect due to the acetone doping. At 4.2 K, the transport Jc for the 5 wt % acetone doped tapes sintered at 700C reached up to 2.4x10^4 A/cm^2 at 10 T, which is even higher than that of the nano-C added samples heated at 900C.



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