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Title: Dielectric properties of Ba<inf>1-</inf><inf>x</inf>Sr<inf>x</inf>(Fe<inf>0.5</inf>Ta<inf>0.5</inf>)O<inf>3</inf>giant dielectric ceramics
Authors: L. Tawee
P. Jaita
R. Sanjoom
K. Pengpat
S. Eitssayeam
T. Tunkasiri
G. Rujijanagul
S. J. Mile
Keywords: Materials Science
Physics and Astronomy
Issue Date: 26-Apr-2017
Abstract: © 2017 Taylor & Francis Group, LLC. The Ba1-xSrx(Fe0.5Ta0.5)O3ceramics were fabricated via a solid-state technique. Effects of Sr-doping on phase formation, densification and dielectric properties were investigated. XRD data revealed that all ceramics had perovskite structure with cubic symmetry. However, single phase was obtained only at x ≤ 0.1. All samples presented high dielectric constant-frequency dispersion with high dielectric constants. Complex impedance analysis indicated that heterogeneous conduction that occurred in the studied ceramics, should be the primary reason for the dielectric constant-frequency dispersion with high dielectric constants. However, the electrode effect was found to dominate for the x = 0.1 ceramic as a result in the very strong dielectric constant-frequency dispersion with very high dielectric constants (ϵr∼ 1.58 × 105at 310°C).
ISSN: 15635112
Appears in Collections:CMUL: Journal Articles

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