Skip to main content
placeholder image

Effect of carbon substitution on the superconducting properties of MgB2 doped with multi-walled carbon nanotubes and nano carbon

Journal Article


Download full-text (Open Access)

Abstract


  • We have fabricated the multiwalled carbon nanotube

    (MWCNT) and nano-C doped MgB2 bulk and wire to investigate

    the effect of carbon substitution in theMgB2. Carbon substitution

    into boron site was confirmed by the shrinkage of the lattice parameter

    with the increasing of the doping level. It was found that

    the lattice distortion and optimum doping level are different in the

    CNT and nano-C samples. This can be explained by carbon substitution,

    which is a more direct substitution process with the nano-C

    precursor. With CNT doping, carbon substitution only occurred

    after break out of carbon atoms from CNT. Both dopants showed

    significant enhancement in both magnetic critical current density,

    (H), and transport critical current at high sintering temperature

    like 900 C. Transport of magnitude 14 A and 30 A was observed

    at 4.2K and 12T for CNT and nano-C doping, respectively.

Publication Date


  • 2007

Citation


  • Yeoh, W. K., Horvat, J., Kim, J., Xu, X. & Dou, S. Xue. (2007). Effect of carbon substitution on the superconducting properties of MgB2 doped with multi-walled carbon nanotubes and nano carbon. IEEE Transactions on Applied Superconductivity, 17 (2), 2929-2932.

Scopus Eid


  • 2-s2.0-34547498999

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1437&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/425

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 2929

End Page


  • 2932

Volume


  • 17

Issue


  • 2

Place Of Publication


  • New York, USA

Abstract


  • We have fabricated the multiwalled carbon nanotube

    (MWCNT) and nano-C doped MgB2 bulk and wire to investigate

    the effect of carbon substitution in theMgB2. Carbon substitution

    into boron site was confirmed by the shrinkage of the lattice parameter

    with the increasing of the doping level. It was found that

    the lattice distortion and optimum doping level are different in the

    CNT and nano-C samples. This can be explained by carbon substitution,

    which is a more direct substitution process with the nano-C

    precursor. With CNT doping, carbon substitution only occurred

    after break out of carbon atoms from CNT. Both dopants showed

    significant enhancement in both magnetic critical current density,

    (H), and transport critical current at high sintering temperature

    like 900 C. Transport of magnitude 14 A and 30 A was observed

    at 4.2K and 12T for CNT and nano-C doping, respectively.

Publication Date


  • 2007

Citation


  • Yeoh, W. K., Horvat, J., Kim, J., Xu, X. & Dou, S. Xue. (2007). Effect of carbon substitution on the superconducting properties of MgB2 doped with multi-walled carbon nanotubes and nano carbon. IEEE Transactions on Applied Superconductivity, 17 (2), 2929-2932.

Scopus Eid


  • 2-s2.0-34547498999

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1437&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/425

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 2929

End Page


  • 2932

Volume


  • 17

Issue


  • 2

Place Of Publication


  • New York, USA