Microwave-hydrothermal (MH) synthesis of BaTiO3 was done at 138°C with reaction time as low as 15 min, using Ba(NO3)2, TiCl4 and KOH as starting chemicals. The resulting powder was pressed into pellets and sintered at different temperatures. BaTiO3 ceramics prepared by the above method resulted in a density of about 93% upon sintering at 1300°C/2 h with larger grains and room temperature relative permittivity of 2000 at 1 kHz with a Curie temperature of 125°C. The above properties were compared with samples of the same composition prepared by conventional hydrothermal (CH) method using the same starting solutions.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering