Synthesis of barium titanate improved by modifications in the kinetics of the solid state reaction

2000 ◽  
Vol 20 (14-15) ◽  
pp. 2347-2351 ◽  
Author(s):  
E. Brzozowski ◽  
M.S. Castro
Keyword(s):  
Solid State ◽  
Barium Titanate ◽  
Solid State Reaction ◽  
Kinetics Of ◽  
Synthesis Of Barium Titanate

Ba0.9 A0.1TiO3 (A = Al and Mg) Powders Synthesized by Solid State Reaction Technique and their Dielectric Properties

2013 ◽  
Vol 747 ◽  
pp. 603-606 ◽  
Author(s):  
Tunchanoke Khongnakhon ◽  
Oratai Jongprateep
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Chemical Composition ◽  
Solid State ◽  
Barium Titanate ◽  
Solid State Reaction ◽  
Low Density ◽  
Solid State Reaction Technique ◽  
Synthesis Of Barium Titanate

Barium titanate has been a common material for fabrication of capacitors. Synthesis of barium titanate can be achieved by various techniques. These techniques are believed to affect dielectric properties. This research was aimed at synthesizing BaTiO3 and Ba0.9 A0.1TiO3 (A = Al and Mg) powders by solid state reaction technique. Dielectric constant of barium titanate and the ones doped with 10 at% Al and Mg prepared by the solid state reaction technique had dielectric constant ranging from 109 to 280 at 1 MHz. Results from density examination revealed that barium titanate samples prepared by the solid state reaction had low density. This may leads to the decrease of dielectric constant. Results from this study suggested that the decline of the dielectric properties was attributed to chemical composition and density of samples.

Kinetics and Mechanism of the Microwave Synthesis of Barium Titanate

1996 ◽  
Vol 430 ◽  
Author(s):  
Hanlin Zhang ◽  
Shixi Ouyang ◽  
Hanxing Liu ◽  
Yongwei Li
Keyword(s):  
Activation Energy ◽  
Solid State ◽  
Microwave Field ◽  
Formation Rate ◽  
Xrd Analysis ◽  
Conventional Heating ◽  
Heating Process ◽  
Formation Kinetics ◽  
Kinetics Of ◽  
Synthesis Of Barium Titanate

AbstractThe formation kinetics of BaTiO3from the solid-state BaCO3and TiO2powder in a microwave field was investigated. The quantitative XRD analysis and the model considered the volume change between reactant and product were used in this experiment. Results show that the formation rate of BaTiO3in a microwave field is much faster than upon conventional heating. The activation energy of the solid state reaction for BaTiO3was measured as 58 kJ/mol. This indicates the enhancement of diffusion by the microwave heating process.

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