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

研究成果: Article

65 引用 (Scopus)

抄録

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.

元の言語English
ページ(範囲)1182-1186
ページ数5
ジャーナルSuperconductor Science and Technology
16
発行部数10
DOI
出版物ステータスPublished - 2003 10
外部発表Yes

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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

これを引用

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.

:: Superconductor Science and Technology, 巻 16, 番号 10, 10.2003, p. 1182-1186.

研究成果: Article

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, 巻. 16, 番号 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. :: Superconductor Science and Technology. 2003 ; 巻 16, 番号 10. pp. 1182-1186.
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T1 - Doping effect of nano-diamond on superconductivity and flux pinning in MgB2

AU - Cheng, C. H.

AU - Zhang, H.

AU - Zhao, Y.

AU - Feng, Y.

AU - Rui, X. F.

AU - Munroe, P.

AU - Zeng, H. M.

AU - Koshizuka, N.

AU - Murakami, Masato

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AB - 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.

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