Article Dans Une Revue Journal of Materials Science Année : 2014

From normal ferroelectric transition to relaxor behavior in Aurivillius ferroelectric ceramics

Résumé

The influence of the barium concentration on the dielectric response of Sr1−x Ba x Bi2Nb2O9 system, with x = 0, 15, 30, 50, 70, 85, 100 at.%, has been studied. The barium concentration dependence of T m, as well as the temperature of the corresponding maximum for the real part of the dielectric permittivity, has suggested a cation site mixing among atomic positions, which has been supported by the structural analysis. A transition from normal ferroelectric–paraelectric phase transition to a relaxor behavior has been observed in the studied samples, when the barium concentration has increased. The relaxor behavior has been discussed.
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Dates et versions

hal-04685785 , version 1 (03-09-2024)

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Citer

Y. González-Abreu, A. Peláiz-Barranco, J. D. S. Guerra, Yaovi Gagou, Pierre Saint-Grégoire. From normal ferroelectric transition to relaxor behavior in Aurivillius ferroelectric ceramics. Journal of Materials Science, 2014, 49 (21), pp.7437-7444. ⟨10.1007/s10853-014-8448-0⟩. ⟨hal-04685785⟩
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