Sr 2 NaNb 4 O 13 − (SNNO − ) nanosheets were exfoliated from the K(Sr 2 Na)Nb 4 O 13 compound that was synthesized at 1200 °C. The SNNO − nanosheets were deposited on a Pt/Ti/SiO 2 /Si substrate at room temperature by the electrophoretic method. Annealing was conducted at various temperatures to remove organic defects in the SNNO film. A crystalline SNNO phase without organic defects was formed in the film annealed at 500 °C. However, a SrNb 2 O 6 secondary phase was formed in the films annealed above 600 °C, probably due to the evaporation of Na 2 O. The SNNO thin film annealed at 500 °C showed a dielectric constant of 74 at 1.0 MHz with a dielectric loss of 2.2%. This film also exhibited a low leakage current density of 9.0 × 10 −8 A/cm 2 at 0.6 MV/cm with a high breakdown electric field of 0.72 MV/cm.
|Number of pages||7|
|Journal||Journal of the European Ceramic Society|
|Publication status||Published - 2017 Jun 1|
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Materials Chemistry