Room-temperature Coulomb oscillation of a proton dot in Ni-Nb-Zr-H glassy alloys with nanofarad capacitance

Mikio Fukuhara, Akihisa Inoue

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

A dc-induced voltage oscillation was observed at room temperature in (Ni36Nb24Zr40) 90.1 H9.9 glassy alloy ribbons of about 1 mm width and 30 μm thickness and an electrode distance of 20 mm. The I-V characteristic provided evidence of the Coulomb staircase at ∼300 K, suggesting the existence of macroscopic proton dot tunneling along the Zr(Nb)-H - H-Zr(Nb) atomic bond array, where is the vacancy barrier among clusters. The frequency decreased remarkably with increasing capacitance (C) and resistance (R) at room temperature. Thus the (Ni36Nb24Zr 40) 90.1 H9.9 glassy alloy can be regarded as a dc/ac converting device with a large number of nanofarad capacitance.

Original languageEnglish
Article number063715
JournalJournal of Applied Physics
Volume105
Issue number6
DOIs
Publication statusPublished - 2009

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Room-temperature Coulomb oscillation of a proton dot in Ni-Nb-Zr-H glassy alloys with nanofarad capacitance'. Together they form a unique fingerprint.

Cite this