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Title: Influence of Sn and Pb ions substitutions on dielectric properties of barium titanate
Authors: Bąk, Wojciech
Kajtoch, Czesław
Ptaszek, Sylwia
Lisińska-Czekaj, Agata
Czekaj, Dionizy
Ziętek, D.
Glos, T.
Garbarz-Glos, Barbara
Keywords: Barium titanate ceramics; Dielectric properties; Phase transition; Ferroelectric materials; Titanium compounds
Issue Date: 2016
Citation: Archives of Metallurgy and Materials, 2016, iss. 2, s. 905-908
Abstract: The results of the microstructural and dielectric measurements of (Ba1-xPbx)(Ti1-xSnx)O3 (BPTSx) (x = 0, 0.05, 0.10, 0.30) polycrystalline samples are presented. The samples were obtained by means of a high temperature synthesis and their expected stoichiometry was confirmed by energy dispersive spectroscopy (EDS) measurements. The dielectric properties of BPTSx were studied with the use of broadband dielectric spectroscopy. The measurements over a wide range of temperature (from 140 K to 600 K) and frequency (from 0.1 Hz to 10 MHz) were performed. The experimental results indicate an influence of Pb ions in a sublattice A and Sn ions in a sublattice B substitution on paraelectric - ferroelectric phase transition parameters. Diffused phase transitions from a paraelectric to ferroelectric state (for x = 0.10 and x = 0.30) were observed. From the electric modulus measurements in the frequency domain the relaxation times and the activation energy were determined.
DOI: 10.1515/amm-2016-0153
ISSN: 1733-3490
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