Ceramics-Silikáty 60, (3) 205 - 209 (2016) |
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MORPHOTROPIC PHASE BOUNDARY IN (Na0.5 Bi0.5)TiO₃−BaTiO₃ LEAD FREE SYSTEM: XRD AND RAMAN SPECTROSCOPY STUDIES
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Lidjici Hamza 1,2, Khemakhem Hamadi 3
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1 Laboratoire d étude et développement des matériaux semi-conducteurs et diélectriques, Université de Laghouat, Route de Ghardaia B.P.37G. Laghouat. Algérie
2 Laboratoire des Matériaux et Procédés, Université de Valenciennes et du Hainaut-Cambrésis, Z.I du Champ de l Abbesse 59600 Maubeuge, France
3 Laboratoire des Matériaux Multifonctionnels et Applications (LMMA), Faculté des Sciences de Sfax, Université de Sfax, BP. 1171, 3000, Sfax-Tunisie
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Keywords: NBT-BT lead-free piezoelectric, MPB, XRD, Raman spectroscopy
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In this paper, we report a raman spectroscopy and X-ray diffraction investigations on lead-free
(1- x)Bi0.5Na0.5TiO₃-xBaTiO₃ (NBT-BT) solid solution ceramics over a composition range of 0 ≤ x ≤ 0.10 at room temperature. The Raman curves were fitted to the individual Raman peaks. The obtained peaks were analyzed by observing the changes in their respective peak positions and intensities with increasing of BaTiO₃. In light of the obtained observations, it is suggested that a MPB of rhombohedral and tetragonal phases of the studied system lies at the composition of x=0.065. Further support for the obtained MPB was drawn from X-ray diffraction measurements.
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Record in: Scopus | Web of Science |
 PDF (0.8 MB) |
doi: 10.13168/cs.2016.0031
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