Abstract
Polycrystalline BaTi2O5 (BT2) was prepared by solid state sintering in air using BaCO3 and TiO2 as starting materials. A rod-like BT2 sintered bodies in a single phase were obtained above 1025 °C by adding 5 wt.% B2O3. The densification of BT2 sintered bodies decreased with increasing sintering temperature. The maximum permittivity of BT2 sintered body was 640 at the Curie temperature (Tc) of 461 °C and the frequency of 100 kHz. The addition of B2O3 was effective to obtain BT2 in a single phase at low temperatures with elongated microstructure and to improve the permittivity, indicating the formation of preferred orientation at low temperature was related with liquid-phase sintering mechanism.
Original language | English |
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Pages (from-to) | 2280-2282 |
Number of pages | 3 |
Journal | Materials Letters |
Volume | 63 |
Issue number | 27 |
DOIs | |
Publication status | Published - 2009 Nov 15 |
Keywords
- Ceramics
- Ferroelectrics
- Microstructure
- Sintering
- X-ray diffraction
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering