Pressure-induced positive electrical resistivity coefficient in Ni-Nb-Zr-H glassy alloy

M. Fukuhara, C. Gangli, K. Matsubayashi, Y. Uwatoko

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2 Citations (Scopus)

Abstract

Measurements under hydrostatic pressure of the electrical resistivity of (Ni 0.36Nb 0.24Zr 0.40) 100-xH x (x = 9.8, 11.5, and 14) glassy alloys have been made in the range of 0-8 GPa and 0.5-300 K. The resistivity of the (Ni 0.36Nb 0.24Zr 0.40) 86H 14 alloy changed its sign from negative to positive under application of 2-8 GPa in the temperature range of 300-22 K, coming from electron-phonon interaction in the cluster structure under pressure, accompanied by deformation of the clusters. In temperature region below 22 K, the resistivity showed negative thermal coefficient resistance by Debye-Waller factor contribution, and superconductivity was observed at 1.5 K.

Original languageEnglish
Article number253114
JournalApplied Physics Letters
Volume100
Issue number25
DOIs
Publication statusPublished - 2012 Jun 18

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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