The effects of Bi 4 Ti 3 O 12 addition on the microstructure and dielectric properties of Mn-modified BaTiO 3 were investigated to develop low temperature fired BaTiO 3 -based ceramics with stable temperature characteristics. The sintering temperature of Mn-doped BaTiO 3 could be reduced to 1200 °C by adding more than 1 mol% Bi 4 Ti 3 O 12 . TEM results show an apparent core-shell structure with 2 mol% Bi 4 Ti 3 O 12 addition. However, it was destroyed when the Bi 4 Ti 3 O 12 content increased from 2 to 4 mol%. The permittivity decreased and the Curie temperature shifted to higher temperature when the Bi 4 Ti 3 O 12 content increased from 0 to 3 mol%. The temperature characteristic of capacitance was very close to the EIA X8R specification when 2 mol% Bi 4 Ti 3 O 12 was added due to the presence of the core-shell grain structure and raised Curie temperature. With adequate Bi 4 Ti 3 O 12 addition, the BaTiO 3 -based system shows great potential for applications in EIA X8R-type multilayer ceramic capacitors.
|Number of pages||7|
|Journal||Journal of the European Ceramic Society|
|Publication status||Published - 2009 Sep 1|
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Materials Chemistry