Abstract
BaTiO3 (BT) nanopowders were synthesized using the alkoxide-hydroxide route. Formation of BT nanopowders commenced at 60 °C and their amount increased with increasing temperature. However, a TiO2 second phase was always developed at temperatures higher than 100 °C due to the insufficient amount of H2O caused by its evaporation. Therefore, a two-step process is presented herein for the synthesis of homogeneous, highly tetragonal BT nanopowders. The cubic BT nanopowders were synthesized at 100 °C and subsequently heated to high temperatures (>200 °C) to increase their tetragonality. Homogeneous BT nanopowders with an average size of 94.8 nm and a high c/a ratio of 1.0081 were obtained for the specimens synthesized at 260 °C for 60 h after the formation of the cubic BT nanopowders at 100 °C for 20 h.
Original language | English |
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Pages (from-to) | 9089-9092 |
Number of pages | 4 |
Journal | Journal of Alloys and Compounds |
Volume | 509 |
Issue number | 37 |
DOIs | |
Publication status | Published - 2011 Sept 15 |
Keywords
- Chemical synthesis
- Nanopowders
- Nanostructured materials
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry