Doping effect of Zr and Ti on the critical current density of MgB2 bulk superconductors prepared under ambient pressure

Y. Zhao, Y. Feng, D. X. Huang, T. Machi, C. H. Cheng, K. Nakao, N. Chikumoto, Y. Fudamoto, N. Koshizuka, Masato Murakami

研究成果: Article

38 引用 (Scopus)

抄録

The doping effect of Ti and Zr on the superconducting properties and the microstructure of sintered MgB2 bulk materials has been studied. The transition metal is found to work as a sintering assistant, which significantly enhances the grain connection of the MgB2 bulk materials during sintering processing. With this technique, we have fabricated Ti-doped MgB2 bulk materials consisting of fine 10 nm scale particles and achieved a high Jc over 1 MA/cm2 in 0 T at 20 K. The large enhancement of Jc is explained by the excellent connection between grains and a high density of pinning centers served by grain boundaries and MgO nanoparticles.

元の言語English
ページ(範囲)122-126
ページ数5
ジャーナルPhysica C: Superconductivity and its Applications
378-381
発行部数PART 1
DOI
出版物ステータスPublished - 2002 10 1
外部発表Yes

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Critical current density (superconductivity)
Superconducting materials
critical current
sintering
Doping (additives)
current density
Sintering
grain boundaries
transition metals
nanoparticles
microstructure
Transition metals
augmentation
Grain boundaries
Nanoparticles
Microstructure
Processing

ASJC Scopus subject areas

  • Condensed Matter Physics

これを引用

Doping effect of Zr and Ti on the critical current density of MgB2 bulk superconductors prepared under ambient pressure. / Zhao, Y.; Feng, Y.; Huang, D. X.; Machi, T.; Cheng, C. H.; Nakao, K.; Chikumoto, N.; Fudamoto, Y.; Koshizuka, N.; Murakami, Masato.

:: Physica C: Superconductivity and its Applications, 巻 378-381, 番号 PART 1, 01.10.2002, p. 122-126.

研究成果: Article

Zhao, Y, Feng, Y, Huang, DX, Machi, T, Cheng, CH, Nakao, K, Chikumoto, N, Fudamoto, Y, Koshizuka, N & Murakami, M 2002, 'Doping effect of Zr and Ti on the critical current density of MgB2 bulk superconductors prepared under ambient pressure', Physica C: Superconductivity and its Applications, 巻. 378-381, 番号 PART 1, pp. 122-126. https://doi.org/10.1016/S0921-4534(02)01395-3
Zhao, Y. ; Feng, Y. ; Huang, D. X. ; Machi, T. ; Cheng, C. H. ; Nakao, K. ; Chikumoto, N. ; Fudamoto, Y. ; Koshizuka, N. ; Murakami, Masato. / Doping effect of Zr and Ti on the critical current density of MgB2 bulk superconductors prepared under ambient pressure. :: Physica C: Superconductivity and its Applications. 2002 ; 巻 378-381, 番号 PART 1. pp. 122-126.
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AU - Huang, D. X.

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AU - Nakao, K.

AU - Chikumoto, N.

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