Doping effect of nano-diamond on superconductivity and flux pinning in MgB2

C. H. Cheng, H. Zhang, Y. Zhao, Y. Feng, X. F. Rui, P. Munroe, H. M. Zeng, N. Koshizuka, Masato Murakami

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

The doping effect of diamond nanoparticles on the superconducting properties of MgB2 bulk material has been studied. It is found that the superconducting transition temperature Tc of MgB2 is suppressed by the diamond doping, however, the irreversibility field Hirr and the critical current density Jc are systematically enhanced. Microstructural analysis shows that the diamond-doped MgB2 superconductor consists of tightly-packed MgB2 nano-grains (∼50-100 nm) with highly dispersed and uniformly distributed diamond nanoparticles (∼10-20 nm) inside the grains. The highly density of dislocations and diamond nanoparticles may be responsible for the enhanced flux pinning in the diamond-doped MgB2.

Original languageEnglish
Pages (from-to)1182-1186
Number of pages5
JournalSuperconductor Science and Technology
Volume16
Issue number10
DOIs
Publication statusPublished - 2003 Oct
Externally publishedYes

Fingerprint

Flux pinning
Diamond
flux pinning
Superconductivity
Diamonds
superconductivity
diamonds
Doping (additives)
Nanoparticles
nanoparticles
Superconducting materials
Superconducting transition temperature
critical current
transition temperature
current density

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Doping effect of nano-diamond on superconductivity and flux pinning in MgB2. / Cheng, C. H.; Zhang, H.; Zhao, Y.; Feng, Y.; Rui, X. F.; Munroe, P.; Zeng, H. M.; Koshizuka, N.; Murakami, Masato.

In: Superconductor Science and Technology, Vol. 16, No. 10, 10.2003, p. 1182-1186.

Research output: Contribution to journalArticle

Cheng, CH, Zhang, H, Zhao, Y, Feng, Y, Rui, XF, Munroe, P, Zeng, HM, Koshizuka, N & Murakami, M 2003, 'Doping effect of nano-diamond on superconductivity and flux pinning in MgB2', Superconductor Science and Technology, vol. 16, no. 10, pp. 1182-1186. https://doi.org/10.1088/0953-2048/16/10/310
Cheng, C. H. ; Zhang, H. ; Zhao, Y. ; Feng, Y. ; Rui, X. F. ; Munroe, P. ; Zeng, H. M. ; Koshizuka, N. ; Murakami, Masato. / Doping effect of nano-diamond on superconductivity and flux pinning in MgB2. In: Superconductor Science and Technology. 2003 ; Vol. 16, No. 10. pp. 1182-1186.
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AU - Munroe, P.

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