Related Experiment Video
Updated: Aug 14, 2026

Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing
Published on: June 9, 2023
Formation of protonic defects in perovskite-type oxides with redox-active acceptors: case study on Fe-doped SrTiO(3)
Ji Haeng Yu1, Jong-Sook Lee, Joachim Maier
1Max-Planck-Institut für Festkörperforschung, 70569 Stuttgart, Germany.
Abstract:
The thermodynamics of water incorporation into Fe-doped SrTiO(3) was investigated by thermogravimetric measurements. Changes in valence states of redox-active dopant ions (Fe(3+)/Fe(4+)) with water vapor pressure were taken into account in the defect chemical analysis. The proton solubility was significantly enhanced by the presence of the redox centers. The hydration enthalpies and entropies were -60 kJ mol(-1) and -122 J mol(-1) K(-1). The defect chemical model was applied to describe the water vapor dependence of the electrical conductivity in mixed ionic and electronic conducting Fe-doped SrTiO(3) single crystals.
Related Concept Videos
Imperfections in Crystal Structure: Non-Stoichiometric Defects
Imperfections in Crystal Structure: Stoichiometric Point Defects
Properties of Transition Metals
Imperfections in Crystal Structure: Point, Line and Plane Defects
Ionic Bonding and Electron Transfer
Oxidation Numbers

