Superconductivity of Ni-Nb-Zr-H glassy alloys with nanoclusters

Mikio Fukuhara, Hajime Yoshida, Keiichi Koyama, Akihisa Inoue, Yoshio Miura

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


We investigated the hydrogen effect on superconductivity in the (Ni 0.36Nb 0.24Zr 0.40) 100-xH x(0 ≤ x ≤ 6.4) glassy alloys with nanoclusters, as a function of temperature. The resistivity of these alloys started to drop from onset temperature of around 9.5 K. The (Ni 0.36Nb 0.24Zr 0.40) 98.6H 1.6 showed zero resistance at 2.1 K. However, the application of a magnetic field >4.6 T arrested the drop of resistivity, showing the existence of superconductivity of type II. The maximum onset temperature of 11.3 K was observed at 4.4 at% H. The superconducting behavior of the glassy alloys would be associated with electron pair transport along zigzag paths, which link the shortened atomic-Ni-Ni-Ni-array in the Zr 5Ni 5Nb 3 clusters, and tunneling among the clusters.

Original languageEnglish
Pages (from-to)4975-4978
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Issue number8
Publication statusPublished - 2010 Aug 1


  • Glassy alloys
  • Nanoclusters
  • Superconductor

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics


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