Modulation relaxor behaviour by chemical substitution in the system Ba1-xCaxTi1-y(Zn1/3Nb2/3)yO3
KHEMAKHEM, L.
Laboratoire de sciences des matériaux et de l’environnement [Université de Sfax] [SME]
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Laboratoire de sciences des matériaux et de l’environnement [Université de Sfax] [SME]
KHEMAKHEM, L.
Laboratoire de sciences des matériaux et de l’environnement [Université de Sfax] [SME]
Laboratoire de sciences des matériaux et de l’environnement [Université de Sfax] [SME]
BEN SALAH, A.
Laboratoire de sciences des matériaux et de l’environnement [Université de Sfax] [SME]
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Laboratoire de sciences des matériaux et de l’environnement [Université de Sfax] [SME]
Langue
en
Article de revue
Ce document a été publié dans
Ferroelectrics. 2008, vol. 371, n° 1, p. 82-88
Taylor & Francis: STM, Behavioural Science and Public Health Titles
Résumé en anglais
This paper reports the structural and dielectric properties of Ba1 - xCaxTi1 - y (Zn1/3Nb2/3)yO3 ceramics with y is fixed to 0.2 and x = 0.2 and 0.3. Single-phase solid solutions of the simples were determined by X-ray ...Lire la suite >
This paper reports the structural and dielectric properties of Ba1 - xCaxTi1 - y (Zn1/3Nb2/3)yO3 ceramics with y is fixed to 0.2 and x = 0.2 and 0.3. Single-phase solid solutions of the simples were determined by X-ray diffraction. For the solid solution, BaTi1 - y(Zn1/3Nb2/3)yO3, the evolution of dielectric behaviour from a sharp ferroelectric peak (for y < 0.075) and to ferroelectric relaxor (for 0.075 < y < 0.2) was observed with increasing of Zn and Nb concentration but in this case the temperature of the maximum of dielectric permittivity Tm and Δ Tm are lowers. To modulate this relaxor character we have substitute the Ba by Ca to increase Tm and Δ Tm.< Réduire
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