Capacitance distribution of Ni-Nb-Zr-H glassy alloys

Mikio Fukuhara, Hajime Yoshida, Nobuhisa Fujima, Hiroshi Kawarada

研究成果: Article査読

5 被引用数 (Scopus)

抄録

Capacitance distribution of {(Ni 0.6Nb 0.4) 1-xZr x} 100-y-H y (x = 0.30, 0.35, 0.40, 0.45 and 0.50, 0 ≥ y ≥ 20) glassy alloy ribbons was carried out by ac impedance analysis at frequency of 1 kHz, in terms of a distributed constant equivalent circuit. The capacitance can be represented by oblique contour lines. The highest capacitance (1-11 μF) could be found near the point when x = 0.40, y = 10, which is a composition occurring room-temperature Coulomb oscillation, while capacitance of the composition (x =0.35, y =4) occurring ballistic transport was around 0.8 μF. The capacitance difference would be explained by an effect of hydrogen localization derived from morphology of distorted Zr-centered icosahedral Zr 5Ni 5Nb 3 clusters and ideal Ni-centered clusters. The electrocapillarity equation showed that the specific capacitance between two electrodes increases parabolic with decreasing the distance, as a polarized glutinous liquid.

本文言語English
ページ(範囲)3848-3852
ページ数5
ジャーナルJournal of Nanoscience and Nanotechnology
12
5
DOI
出版ステータスPublished - 2012

ASJC Scopus subject areas

  • バイオエンジニアリング
  • 化学 (全般)
  • 生体医工学
  • 材料科学(全般)
  • 凝縮系物理学

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