Journal of Superconductivity and Novel Magnetism

, Volume 28, Issue 2, pp 425–430 | Cite as

Enhancing Superconducting Properties of MgB2 by Addition of Magnetic Particles

  • N. Novosel
  • S. Galić
  • D. Pajić
  • K. Zadro
  • E. Babić
Original Paper


Main results of ongoing comprehensive study of the influence of magnetic nanoparticles (MNP) on superconducting properties (transition temperature T c, critical fields and critical current density, J c, etc.) of high-quality Fe-sheathed MgB2 wires are briefly reviewed. We prepared over 60 Fe-sheathed MgB2 wires doped with 12 different types and quantities of MNPs, such as elemental magnets, magnetic borides, ferrites, and rare earth borides. Generally, doping with MNPs suppresses T c and higher MNP contents cause deterioration of superconducting properties of wires. However, light doping (≤ 2.5 wt%) with some types of MNPs (e.g., Ni) improved flux pinning and in-field J c of wires. Particularly promising seems co-doping with core-shell MNPs, where both critical fields and J c were simultaneously enhanced. Possible origins of these improvements (such as magnetic flux pinning) are briefly discussed.


MgB2 wires Magnetic nanoparticle doping Flux pinning 


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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • N. Novosel
    • 1
  • S. Galić
    • 1
  • D. Pajić
    • 1
  • K. Zadro
    • 1
  • E. Babić
    • 1
  1. 1.Department of Physics, Faculty of ScienceUniversity of ZagrebZagrebCroatia

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