Electrical conduction properties of Sr-doped Bi4(SiO 4)3 with the eulytite-type structure

Naoto Kitamura, Koji Amezawa, Yoshiharu Uchimoto, Yoichi Tomii, Teiichi Hanada

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Electrical conduction in 1 mol% Sr-doped Bi4(SiO 4)3 with the eulytite-type structure at elevated temperatures was investigated with conductivity measurements. Conductivity of the material under wet condition was higher than that under dry condition, and were 1.2 × 10-6 - 9.7 × 10-5S cm-1 at 500-850 °C. From H/D isotope effects and p(O 2)-dependencies of the conductivity, it was found that the Sr-doped Bi4(SiO4)3 exhibited protonic conduction at all the temperatures investigated while contribution of p-type conduction became significant with increasing p(O2) and/or temperature. Protonic and p-type conductions in the material were discussed in terms of defect equilibria.

Original languageEnglish
Pages (from-to)6566-6571
Number of pages6
JournalJournal of Materials Science
Volume42
Issue number16
DOIs
Publication statusPublished - 2007 Aug 1
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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