• DocumentCode
    842529
  • Title

    Glass-collective pinning and flux creep dynamics regimes in MgB2 bulk

  • Author

    Gioacchino, Daniele Di ; Tripodi, Paolo ; Vinko, Jenny Darja

  • Author_Institution
    Nat. Inst. of Nucl. Phys.-Nat. Lab. of Frascati, Italy
  • Volume
    15
  • Issue
    2
  • fYear
    2005
  • fDate
    6/1/2005 12:00:00 AM
  • Firstpage
    3304
  • Lastpage
    3307
  • Abstract
    Superconducting dynamic response in zero field cooling (ZFC) of MgB2 bulk has been analyzed using high harmonic ac susceptibility measurements (χn). The driving external ac magnetic field is in the frequency range [107Hzdc<5T] and the temperature has been varied in the range [15Kdc investigate different current levels. This way, different pinning regimes as single vortex, small bundle, large bundle are studied. Using this approach some parts of the MgB2 three-dimensional phase diagram H-T-J can be described.
  • Keywords
    flux flow; flux pinning; magnesium compounds; magnetic susceptibility; phase diagrams; type II superconductors; MgB2; MgB2 bulk; MgB2 three-dimensional phase diagram; external ac magnetic field; external dc magnetic field; flux creep dynamics regimes; glass-collective pinning; high harmonic ac susceptibility measurements; magnesium-boron compound; single vortex; superconducting dynamic response; zero field cooling; Character generation; Coils; Creep; Frequency; Harmonic analysis; Magnetic analysis; Magnetic field measurement; Magnetic fields; Magnetic susceptibility; Temperature; Flux pinning regimes; high harmonic magnetic ac susceptibility measurements; magnesium-boron compound;
  • fLanguage
    English
  • Journal_Title
    Applied Superconductivity, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    1051-8223
  • Type

    jour

  • DOI
    10.1109/TASC.2005.848861
  • Filename
    1440378
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=842529