Enhancement of critical current density in MgB2 bulk superconductor by Ti doping

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

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We studied the Ti doping effect on the superconducting properties and microstructure of sintered MgB2 bulk polycrystals. Using Ti as a sintering assistant, we have fabricated MgB2 bulk materials consisting of fine 10 nm scale particles and achieved a high Jc of 1 MA/cm2 in self-field and 3 × 105 A/cm2 in 1 T at 20 K. The large enhancement of Jc is explained by the excellent connection between grains and the high density of pinning centers served by both grain boundaries and MgO nanoparticles.

Original languageEnglish
Pages (from-to)437-443
Number of pages7
JournalEurophysics Letters
Volume57
Issue number3
DOIs
Publication statusPublished - 2002
Externally publishedYes

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polycrystals
critical current
sintering
grain boundaries
current density
nanoparticles
microstructure
augmentation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Enhancement of critical current density in MgB2 bulk superconductor by Ti doping. / Zhao, Y.; Feng, Y.; Machi, T.; Cheng, C. H.; Huang, D. X.; Fudamoto, Y.; Koshizuka, N.; Murakami, Masato.

In: Europhysics Letters, Vol. 57, No. 3, 2002, p. 437-443.

Research output: Contribution to journalArticle

Zhao, Y, Feng, Y, Machi, T, Cheng, CH, Huang, DX, Fudamoto, Y, Koshizuka, N & Murakami, M 2002, 'Enhancement of critical current density in MgB2 bulk superconductor by Ti doping', Europhysics Letters, vol. 57, no. 3, pp. 437-443. https://doi.org/10.1209/epl/i2002-00479-1
Zhao, Y. ; Feng, Y. ; Machi, T. ; Cheng, C. H. ; Huang, D. X. ; Fudamoto, Y. ; Koshizuka, N. ; Murakami, Masato. / Enhancement of critical current density in MgB2 bulk superconductor by Ti doping. In: Europhysics Letters. 2002 ; Vol. 57, No. 3. pp. 437-443.
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