There has been considerable interest in the effects of strain on electrical conduction in ionic conductors, and it has been suggested that tensile strain in oxide films (2D strain) can significantly increase oxide ion conductivity. Here, we demonstrate the successful generation of 3-dimensional (3D) tensile strain in Pr2NiO4 by dispersing Au particles into the grains. The oxide ion diffusivity was increased significantly by Au dispersion. Redox titration measurements suggest that the 3D tensile strain increased the amount of excess oxygen. Therefore, it is concluded that the mechanical strain changes both the oxide ionic carrier concentration and mobility.
All Science Journal Classification (ASJC) codes
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)