2015 Volume 40 Issue 4 Pages 429-432
The Ru5+ and Y3+-doped BaCeO3 (BaCe0.85Ru0.05Y0.10O3-δ: BCRY) thin film has been prepared on (0001) Al2O3 substrate by RF magnetron sputtering. The BCRY thin film crystallized at 600°C exhibits a- and c-axes orientations. The electrical conductivity of BCRY thin film is higher than that of BaCe0.90Y0.10O3-δ (BCY) thin film. The activation energy (EA) of BCRY thin film is ~0.25 eV, which corresponds to half EA of BCY thin film, below 400°C. The conductivity depends on oxygen partial pressure. The Fermi level (EF) of BCRY thin film shifts to the conduction band side, although the EF of BCY thin film locates at the valence band side. The above results indicate that the BCRY thin film occurs the electron-ion mixed conductions below 400°C.