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, M. Murakami

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


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
Issue number3
Publication statusPublished - 2002
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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