Abstract
Nano-sized BaTiO3 powders doped with Y, Eu and La components were prepared by ultrasonic spray pyrolysis from a spray solution with citric acid. The precursor BaTiO3 powders had a large size, fractured and hollow structures irrespective of the type of dopant. The calcined BaTiO 3 powders with and without dopants had nanometre sizes after a simple milling by hand using an agate mortar. The mean size of La-doped BaTiO 3 powders measured from the transmission electron microscope (TEM) images was 38 nm at a calcination temperature of 700 °C. The mean crystallite sizes of the doped and undoped BaTiO3 powders changed from 20 to 33 nm according to the type of dopant at a calcination temperature of 700 °C. An effective grain growth inhibition took place with the doped BaTiO3 ceramics. The average grain sizes of La and Eu-doped BaTiO3 ceramics were each 380 and 400 nm at a sintering temperature of 1280 °C.
Original language | English |
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Pages (from-to) | 307-310 |
Number of pages | 4 |
Journal | Journal of Ceramic Processing Research |
Volume | 9 |
Issue number | 3 |
Publication status | Published - 2008 |
Externally published | Yes |
Keywords
- Barium titanate
- Nano particle
- Spray pyrolysis
ASJC Scopus subject areas
- Ceramics and Composites