Improvement of critical current density in MgB2 by Ti, Zr and Hf doping

D. Goto, T. Machi, Y. Zhao, N. Koshizuka, Masato Murakami, S. Arai

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Ti, Zr and Hf doped MgB2 polycrystalline samples have been prepared by using a hot pressing technique. In Ti doped MgB2, it was found that the optimum concentration of Ti for the critical current density Jc was 5% and Jc value was improved from 1.9×10 5 A/cm2 (Ti 0%) to 5.6×105 A/cm 2 (Ti 5%) in self-field at 10 K. Jc values were also improved to 5.0×105 A/cm2 with 2% Zr doping and to 4.8×105 A/cm2 with 1% Hf doping. We found that the improvement of the irreversibility field Birr with Zr and Hf doping was larger than that of Ti doping.

Original languageEnglish
Pages (from-to)272-275
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume392-396
Issue numberPART 1
DOIs
Publication statusPublished - 2003 Oct
Externally publishedYes

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critical current
Doping (additives)
current density
hot pressing
Hot pressing

Keywords

  • MgB
  • Pinning properties
  • Superconductivity

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Improvement of critical current density in MgB2 by Ti, Zr and Hf doping. / Goto, D.; Machi, T.; Zhao, Y.; Koshizuka, N.; Murakami, Masato; Arai, S.

In: Physica C: Superconductivity and its Applications, Vol. 392-396, No. PART 1, 10.2003, p. 272-275.

Research output: Contribution to journalArticle

Goto, D. ; Machi, T. ; Zhao, Y. ; Koshizuka, N. ; Murakami, Masato ; Arai, S. / Improvement of critical current density in MgB2 by Ti, Zr and Hf doping. In: Physica C: Superconductivity and its Applications. 2003 ; Vol. 392-396, No. PART 1. pp. 272-275.
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AU - Arai, S.

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