Abstract
Nano-sized Bai1-xLaxTiO3 (0 < x < 0.03) powders were prepared by ultrasonic spray pyrolysis from the spray solution with citric acid. The mean sizes of the primary particles decreased from 110 nm to 59 nm when the x of the Ba1-xLaxTiO 3 powders was changed from 0 to 0.03. The BET surface areas of the powders changed from 9.1 m2/g to 16.9 m2/g. The pure BaTiO3 and La-doped BaTiO3 powders had both tetragonal and cubic crystal structures. The average grain size of the sintered BaTiO 3 specimen was 2.8 uμrn, while those of the La-doped BaTiO 3 pellets ranged from 1.04 uμm to 0.68 uμm according to the doping concentrations of La. The dielectric constant of Ba1-xLa xTiO3(0.01 <x< 0.03) pellets ranged from 2500 to 3855 when sintered at 1280°
Original language | English |
---|---|
Pages (from-to) | 809-814 |
Number of pages | 6 |
Journal | Metals and Materials International |
Volume | 15 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2009 Oct |
Externally published | Yes |
Keywords
- Barium titanate
- Nano powder
- Spray pyrolysis
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys
- Materials Chemistry