Mixed electronic-ionic conduction in Ru-doped SrTiO3 at high temperature

Hiroshige Matsumoto, Daisuke Murakami, Tetsuo Shimura, Shin Ichi Hashimoto, Hiroyasu Iwahara

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13 Citations (Scopus)


The electronic and ionic conduction behavior of Ru-doped SrTiO3 at high temperature was investigated. The conductivity increased significantly with increasing Ru content. SrTi0.80Ru0.20O3-δ exhibits fairly high conductivities, e.g., 3 S cm-1 at 1000°C, and 2 S cm-1 at 600°C. The conductivity had only a slight dependence on the partial pressure of oxygen over a wide range and was largely attributed to n-type electronic conduction. Ru-doped SrTiO3 showed mixed oxide-ionic and electronic conduction under reducing atmospheres. The mechanism of the electronic and ionic conduction is discussed.

Original languageEnglish
Article number385606
Pages (from-to)107-111
Number of pages5
JournalJournal of Electroceramics
Issue number2
Publication statusPublished - 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

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


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