Raman and dielectric investigation of (Ba0.9−xSrxCa0.1)(Ti0.8Zr0.2)O3 ferroelectric ceramics |
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Authors: | Fathi Bahri Hamadi Khemakhem |
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Affiliation: | Laboratoire des Matériaux Ferroélectriques (LMF), Unité de Physique-Mathématiques 05UR15-04, Université de Sfax, Faculté des Sciences de Sfax (FSS), Route de Soukra km 3.5, B.P. 1171, 3000 Sfax, Tunisie |
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Abstract: | Solid solutions of (Ba0.9−xSrxCa0.1)(Ti0.8Zr0.2)O3 (BSCTZ) (0.1≤x≤0.4) were prepared using the conventional solid state reaction method. The effects of the substitution content on the crystallographic structure, phase transition and dielectric properties of the samples were investigated by dielectric and Raman spectroscopy over a wide temperature range from 100 to 500 K. All the samples were noted to undergo a diffuse phase transition from the tetragonal to the cubic phase and to exhibit a relaxor ferroelectric behavior. |
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Keywords: | (Ba0.9&minus xSrxCa0.1)(Ti0.8Zr0.2)O3 (BSCTZ) Perovskite structure Ferroelectric Relaxors Phase transition |
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