Superconducting property of Zr-Co and Zr-Co-Al alloys fabricated by rapid solidification

D. Okai, R. Nagai, G. Motoyama, T. Fukami, T. Yamasaki, Yoshihiko Yokoyama, H. M. Kimura, A. Inoue

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


The superconducting property of Zr (1 x) Co x (x = 10-50 at.%) alloys and a Zr 55 Co 30 Al 15 bulk metallic glass fabricated using techniques of rapid solidification was investigated. The Zr 55 Co 30 Al 15 alloy crystallized by heat treatment in a vacuum atmosphere exhibited superconductivity of T c,on = 2.4 K. This was attributable to the superconducting property of a crystalline Zr-Co alloy precipitated in the Zr 55 Co 30 Al 15 alloy. The T c,on of the crystalline Zr (1 x) Co x alloy was sensitive to the Co content. The increase of Co content for the Zr (1 x) Co x alloy led to the decrease of T c,on . The Zr (1 x) Co x alloy exhibited superconductivity of a maximum T c,on = 3.9 K for the Zr 80 Co 20 alloy with superconducting nanocrystal particles embedded in the amorphous matrix.

Original languageEnglish
Pages (from-to)1048-1051
Number of pages4
JournalPhysica C: Superconductivity and its applications
Issue number20
Publication statusPublished - 2010 Nov 1


  • Metallic glass
  • Nanocrystal
  • Rapid solidification
  • Zr-Co based alloy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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