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Excess Mg addition MgB2 /Fe wires with enhanced critical current density

Journal Article


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Abstract


  • MgB2 /Fe wires with 10 at. % excess Mg produced by in situ powder-in-tube processing were

    compared to normal stoichiometric MgB2 /Fe wires prepared by the same method. It was found that

    the critical current density Jc and the irreversibility field Hirr were significantly enhanced for

    MgB2 /Fe wires with excess Mg. The transport Jc for 10 at. % Mg excess samples sintered at

    800 °C, measured at a field of up to 14 T, increased by a factor of 2 compared to that for the normal

    MgB2 wires. The best Jc results for the 10 at. % Mg excess sample were obtained by heating the

    sample at 600 °C for 1 h; the Jc at a field of 8 T and at temperature of 10 K reached 3

    104 A/cm2. The detailed analysis of the effect of excess Mg on the microstructures, the Jc, and

    the Hirr, of MgB2 /Fe wires are presented in this paper.

Authors


  •   Zeng, R (external author)
  •   Lu, Lin (external author)
  •   Li, W (external author)
  •   Wang, Jian Li.
  •   Shi, Dongqi
  •   Horvat, Josip
  •   Dou, Shi Xue
  •   Bhatia, M (external author)
  •   Sumption, M D (external author)
  •   Dr E Collings, Edward W. (external author)
  •   Yoo, Jaimoo (external author)
  •   Tomsic, Michael (external author)
  •   Rindfleisch, Matthew A. (external author)

Publication Date


  • 2008

Citation


  • Zeng, R., Lu, L., Li, W., Wang, J., Shi, D., Horvat, J., Dou, S. Xue., Bhatia, M., Sumption, M., Collings, E., Yoo, J., Tomsic, M. & Rindfleisch, M. (2008). Excess Mg addition MgB2 /Fe wires with enhanced critical current density. Journal of Applied Physics, 103 (8), 083911-1-083911-6.

Scopus Eid


  • 2-s2.0-43049146211

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1102&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/103

Start Page


  • 083911-1

End Page


  • 083911-6

Volume


  • 103

Issue


  • 8

Place Of Publication


  • http://jap.aip.org/jap/

Abstract


  • MgB2 /Fe wires with 10 at. % excess Mg produced by in situ powder-in-tube processing were

    compared to normal stoichiometric MgB2 /Fe wires prepared by the same method. It was found that

    the critical current density Jc and the irreversibility field Hirr were significantly enhanced for

    MgB2 /Fe wires with excess Mg. The transport Jc for 10 at. % Mg excess samples sintered at

    800 °C, measured at a field of up to 14 T, increased by a factor of 2 compared to that for the normal

    MgB2 wires. The best Jc results for the 10 at. % Mg excess sample were obtained by heating the

    sample at 600 °C for 1 h; the Jc at a field of 8 T and at temperature of 10 K reached 3

    104 A/cm2. The detailed analysis of the effect of excess Mg on the microstructures, the Jc, and

    the Hirr, of MgB2 /Fe wires are presented in this paper.

Authors


  •   Zeng, R (external author)
  •   Lu, Lin (external author)
  •   Li, W (external author)
  •   Wang, Jian Li.
  •   Shi, Dongqi
  •   Horvat, Josip
  •   Dou, Shi Xue
  •   Bhatia, M (external author)
  •   Sumption, M D (external author)
  •   Dr E Collings, Edward W. (external author)
  •   Yoo, Jaimoo (external author)
  •   Tomsic, Michael (external author)
  •   Rindfleisch, Matthew A. (external author)

Publication Date


  • 2008

Citation


  • Zeng, R., Lu, L., Li, W., Wang, J., Shi, D., Horvat, J., Dou, S. Xue., Bhatia, M., Sumption, M., Collings, E., Yoo, J., Tomsic, M. & Rindfleisch, M. (2008). Excess Mg addition MgB2 /Fe wires with enhanced critical current density. Journal of Applied Physics, 103 (8), 083911-1-083911-6.

Scopus Eid


  • 2-s2.0-43049146211

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1102&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/103

Start Page


  • 083911-1

End Page


  • 083911-6

Volume


  • 103

Issue


  • 8

Place Of Publication


  • http://jap.aip.org/jap/