Temperature Dependence of Electrical Condutivity in Polycrystalline Tin Oxide

Jong‐Heun ‐H Lee, Soon‐Ja ‐J Park, Kazushi Hirota

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Abstract

The electrical conductivity of polycrystalline SnO2 in air was measured between 400° and 1400°C using samples prepared by hot isostatic pressing and normal sintering. The apparent activation energy for conduction above 800°C was 1.3 to 1.4 eV in the hot isostatically pressed sample and 1.9 to 2.0 eV in the normally sintered sample. This difference can be interpreted as a result of the pore contributing an additional blocking effect to conduction. Also we found that the electrical conductivity above 1150°C bent down slightly from the linear regime when using a cumulative slope model.

Original languageEnglish
Pages (from-to)2771-2774
Number of pages4
JournalJournal of the American Ceramic Society
Volume73
Issue number9
DOIs
Publication statusPublished - 1990 Sep

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Keywords

  • electrical conductivity
  • polycrystalline materials
  • pores
  • temperature dependence
  • tin oxide

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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