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Influence of ball-milled low purity boron powder on the superconductivity of MgB2

Journal Article


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Abstract


  • MgB2 samples were prepared using as-supplied commercial 96% boron with strong crystalline phase and the same 96% boron (B) after ball milling. The effects of the properties of the starting B powder on the superconductivity were evaluated. We observed that samples using ball-milled 96% B, in comparison with the one made from the as-supplied 96% B, were characterized by small grain size, broadened full width at half maximum (FWHM), and enhanced magnetic critical current density (Jc). Jc reached 2 times 103 A cm-2 at 5 K and 8 T. The improved pinning of these samples seems to be caused by enhanced grain boundary pinning at high field.

UOW Authors


  •   Xu, Xun
  •   Kim, Jung Ho
  •   Yeoh, Wai Kong (external author)
  •   Rindfleisch, Matthew A. (external author)
  •   Tomsic, Michael (external author)
  •   dos Santos, Dayse I. (external author)
  •   Dou, Shi

Publication Date


  • 2007

Citation


  • Xu, X., Kim, J., Yeoh, W., Rindfleisch, M., Tomsic, M., dos Santos, D. & Dou, S. Xue. (2007). Influence of ball-milled low purity boron powder on the superconductivity of MgB2. IEEE Transactions on Applied Superconductivity, 17 (2), 2782-2785.

Scopus Eid


  • 2-s2.0-34547520899

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1447&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/434

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 2782

End Page


  • 2785

Volume


  • 17

Issue


  • 2

Abstract


  • MgB2 samples were prepared using as-supplied commercial 96% boron with strong crystalline phase and the same 96% boron (B) after ball milling. The effects of the properties of the starting B powder on the superconductivity were evaluated. We observed that samples using ball-milled 96% B, in comparison with the one made from the as-supplied 96% B, were characterized by small grain size, broadened full width at half maximum (FWHM), and enhanced magnetic critical current density (Jc). Jc reached 2 times 103 A cm-2 at 5 K and 8 T. The improved pinning of these samples seems to be caused by enhanced grain boundary pinning at high field.

UOW Authors


  •   Xu, Xun
  •   Kim, Jung Ho
  •   Yeoh, Wai Kong (external author)
  •   Rindfleisch, Matthew A. (external author)
  •   Tomsic, Michael (external author)
  •   dos Santos, Dayse I. (external author)
  •   Dou, Shi

Publication Date


  • 2007

Citation


  • Xu, X., Kim, J., Yeoh, W., Rindfleisch, M., Tomsic, M., dos Santos, D. & Dou, S. Xue. (2007). Influence of ball-milled low purity boron powder on the superconductivity of MgB2. IEEE Transactions on Applied Superconductivity, 17 (2), 2782-2785.

Scopus Eid


  • 2-s2.0-34547520899

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1447&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/434

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 2782

End Page


  • 2785

Volume


  • 17

Issue


  • 2