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Title: Dielectric, ferroelectric properties, and grain growth of Ca[sub x]Ba[sub 1-x]Nb₂O[sub 6] ceramics with tungsten-bronzes structure
Authors: Ke, Shanming
Fan, Huiqing
Huang, Haitao
Chan, Helen L. W.
Yu, Shuhui
Subjects: Barium compounds
Calcium compounds
Dielectric hysteresis
Ferroelectric ceramics
Ferroelectric Curie temperature
Ferroelectric transitions
Grain growth
Issue Date: 17-Jul-2008
Publisher: American Institute of Physics
Source: Journal of applied physics, 17 July 2008, v. 104, 024101, p. 1-6
Abstract: Dielectric properties, microstructures, and phase transition behaviors of α and β phases of CaxBa[sub 1-x]Nb₂O[sub 6] (x=0.22, 0.30, and 0.38) ceramics were investigated. All the three compositions had partially filled tungsten-bronze structure (TTB) and relatively high Curie temperatures (up to 345°C) compared with Sr[sub 1−x]Ba[sub x]Nb₂O[sub 6]. The α phase exhibits unambiguously a diffused phase transition, while the β phase is associated with an incommensurate phase and needs to be further studied. The dielectric and ferroelectric properties of Ca[sub x]Ba[sub 1−x]Nb₂O[sub 6] ceramics were strongly processing-dependent. A mechanism was proposed to explain the grain growth behavior of TTB ceramic niobates.
Rights: © 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in S. Ke et al. J. Appl. Phys. 104, 024101 (2008) and may be found at
Type: Journal/Magazine Article
ISSN: 0021-8979
Appears in Collections:MRC Journal/Magazine Articles
AP Journal/Magazine Articles

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