Non-equilibrium crystalline superconductors in Zr-Si binary alloys rapidly quenched from melts

A. Inoue, Y. Takahashi, N. Toyota, T. Fukase, T. Masumoto

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5 Citations (Scopus)

Abstract

The new non-equilibrium superconductor with a b c c structure has been found in rapidly quenched Zr-Si alloys. The silicon content in the b c c alloys was limited to the narrow range between 8 and 11 at%. The b c c alloys showed a superconducting transition whose temperature increased from 3.20 to 3.84 K with decreasing silicon content. The upper critical magnetic field and the critical current density for Zr92Si8 alloy were of the order of 3.58 × 106 Am-1 at 2.0 K and 3.3 × 10-2 Am-2 at 2.42 K in the absence of an applied field. The upper critical field gradient at the transition temperature and the electrical resistivity at 4.2 K were about - 1.82 × 10-1 Am-1 K-1 and about 150 μΩcm. The Ginzburg-Landau parameter κ and coherence length ξGL (0) were estimated to be about 65 and 6.3 nm, respectively, from these experimental values by using the Ginzburg-Landau-Abrikosov-Gorkov theory and hence it is concluded that the present b c c alloys are extremely "soft" type-II superconductors with a high degree of dirtiness.

Original languageEnglish
Pages (from-to)2218-2226
Number of pages9
JournalJournal of Materials Science
Volume17
Issue number8
DOIs
Publication statusPublished - 1982 Aug

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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