• DocumentCode
    1076642
  • Title

    Influence of Ball-Milled Low Purity Boron Powder on the Superconductivity of MgB2

  • Author

    Xu, X. ; Kim, J.H. ; Yeoh, W.K. ; Rindfleisch, M. ; Tomsic, M. ; Santos, Dayse I dos ; Dou, S.X.

  • Author_Institution
    Wollongong Univ., Wollongong
  • Volume
    17
  • Issue
    2
  • fYear
    2007
  • fDate
    6/1/2007 12:00:00 AM
  • Firstpage
    2782
  • Lastpage
    2785
  • 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.
  • Keywords
    ball milling; critical current density (superconductivity); grain boundaries; grain size; magnesium compounds; powders; type II superconductors; MgB2; ball milling; grain boundary pinning; grain size; magnetic critical current density; magnetic flux density 8 T; powders; superconductivity; temperature 5 K; Ball milling; Boron; Conducting materials; Critical current density; Crystalline materials; Crystallization; Grain size; Powders; Superconducting materials; Superconductivity; ${rm MgB}_{2}$; Ball milling; crystallinity; magnetic critical current density;
  • fLanguage
    English
  • Journal_Title
    Applied Superconductivity, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    1051-8223
  • Type

    jour

  • DOI
    10.1109/TASC.2007.899444
  • Filename
    4278324
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1076642