In situ EPR studies of chemical diffusion in oxides

Kazunari Sasaki, J. Maier

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Electron paramagnetic resonance (EPR) was applied as an in situ technique at high temperatures up to 1000°C for defect chemical and transport studies of ionic and mixed conductors. Equilibrium absorption intensities were examined as a function of oxygen partial pressure temperature and doping content for the model materials Y2O3-stabilized ZrO2 and Fe-doped SrTiO3. By this novel use of EPR in the field of solid state ionics, chemical diffusion coefficients and surface exchange coefficients of oxygen can be measured without any probe electrodes under diffusion conditions. This study moreover confirmed the ability to depress substantially the chemical diffusivity by using deep dopants such as Mn or Fe.

Original languageEnglish
Pages (from-to)3055-3061
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume2
Issue number13
DOIs
Publication statusPublished - Jul 1 2000

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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