Abstract
A mixture of ammonium oxalate and ammonium hydroxide was used to coprecipitate barium and niobium ions as barium oxalate and niobium hydroxide under basic conditions. This precursor on calcination at 750°C yielded BaNb2O6 ceramics. This is a much lower temperature as compared to that prepared by traditional solid-state method (1000°C), as reported for the formation of BaNb2O6. Transmission electron microscope (TEM) investigations revealed that the average particle size is 100 nm for the calcined powders. The room temperature dielectric constant at 1 kHz is found to be 1100. The ferroelectric hysteresis loop parameters of these samples were also studied.
Original language | English (US) |
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Pages (from-to) | 169-171 |
Number of pages | 3 |
Journal | Materials Science and Engineering: B |
Volume | 117 |
Issue number | 2 |
DOIs | |
State | Published - Mar 15 2005 |
Keywords
- Ammonia
- Ceramics
- Electron microscopy
- Niobium oxide
- Oxides
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering