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

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

doi:10.1023/A:1013170305526

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

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

ENV - Environmental Studies for Advanced Society

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

The electronic and ionic conduction behavior of Ru-doped SrTiO₃ at high temperature was investigated. The conductivity increased significantly with increasing Ru content. SrTi_0.80Ru_0.20O_3-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 language	English
Article number	385606
Pages (from-to)	107-111
Number of pages	5
Journal	Journal of Electroceramics
Volume	7
Issue number	2
DOIs	https://doi.org/10.1023/A:1013170305526
Publication status	Published - 2001

Keywords

Electronic conduction
Ionic conduction
Ruthenium
SrTiO

ASJC Scopus subject areas

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

Access to Document

10.1023/A:1013170305526

Cite this

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title = "Mixed electronic-ionic conduction in Ru-doped SrTiO3 at high temperature",

abstract = "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.",

keywords = "Electronic conduction, Ionic conduction, Ruthenium, SrTiO",

author = "Hiroshige Matsumoto and Daisuke Murakami and Tetsuo Shimura and Hashimoto, {Shin Ichi} and Hiroyasu Iwahara",

note = "Funding Information: This work was supported by CREST of JST (Japan Science and Technology). Prof. T. Yogo and Ms.",

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language = "English",

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journal = "Journal of Electroceramics",

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TY - JOUR

T1 - Mixed electronic-ionic conduction in Ru-doped SrTiO3 at high temperature

AU - Matsumoto, Hiroshige

AU - Murakami, Daisuke

AU - Shimura, Tetsuo

AU - Hashimoto, Shin Ichi

AU - Iwahara, Hiroyasu

N1 - Funding Information: This work was supported by CREST of JST (Japan Science and Technology). Prof. T. Yogo and Ms.

PY - 2001

Y1 - 2001

N2 - 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.

AB - 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.

KW - Electronic conduction

KW - Ionic conduction

KW - Ruthenium

KW - SrTiO

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