Effects of Electrode on Dielectric Properties of Barium Iron Niobate Ceramics Doped with Gallium Oxide

Abstract:

Ba (Fe_0.8Ga_0.2)_0.5Nb_0.5O₃ ceramics were synthesized via a solid state reaction method. The Raman spectrum analysis indicated that the sample presented a cubic structure. Dielectric measurement on the ceramics with Ag-paste and Au-sputtered electrodes showed that all ceramic samples exhibited very high dielectric constants with a strong frequency dispersion. The Au-sputtered electrode samples presented higher dielectric tunability the dielectric constant than Ag-paste electrode samples.This behaviour was related with the electrode effect, occured in the studied samples.

• Periodical: Key Engineering Materials (Volumes 675-676)
• Pages: 548-551
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.675-676.548
• Online since: January 2016
• Authors: Kachaporn Sanjoom*, Thanatep Phatungthane, Denis Russell Sweatman, Sukum Eitssayeam, Chamnan Randorn, Gobwute Rujijanagul
• Keywords: Barium Iron Niobate, Dielectric Properties, Electrode Effects

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