The electrical and defect properties of Bi3Zn2Sb3O14 pyrochlore: A grain-boundary phase in ZnO-based varistors

Jane Clayton, Hitoshi Takamura, Renaud Metz, Harry L. Tuller, Bernhardt J. Wuensch

研究成果: Article査読

18 被引用数 (Scopus)

抄録

The electrical conductivity of Bi3Zn2Sb3O14 pyrochlore was studied as a function of temperature and partial pressure of oxygen. Conductivity measurements by ac complex impedance analysis and ionic transference number measurements show this pyrochlore to be a mixed ionic-electronic conductor with an energy band gap of 3.15 ± 0.9 eV. A defect model in which Frenkel defects on the oxygen lattice are dominant is confirmed. Enthalpies of reduction, oxidation and the sum of oxygen vacancy formation and migration were found to be 4.82 ± 0.8 eV, 1.48 ± 1.0 eV and 1.67 ± 1.0 eV respectively.

本文言語English
ページ(範囲)113-120
ページ数8
ジャーナルJournal of Electroceramics
7
2
DOI
出版ステータスPublished - 2001 11
外部発表はい

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering
  • Materials Chemistry

フィンガープリント 「The electrical and defect properties of Bi<sub>3</sub>Zn<sub>2</sub>Sb<sub>3</sub>O<sub>14</sub> pyrochlore: A grain-boundary phase in ZnO-based varistors」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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