Ba_0.9 A_0.1TiO₃ (A = Al and Mg) Powders Synthesized by Solid State Reaction Technique and their Dielectric Properties

Abstract:

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 Ba_0.9 A_0.1TiO₃ (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.

• Periodical: Advanced Materials Research (Volume 747)
• Pages: 603-606
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.747.603
• Online since: August 2013
• Authors: Tunchanoke Khongnakhon, Oratai Jongprateep
• Keywords: Barium Titanate (BT), Dielectric Property, Solid-State Reaction

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