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Article dans une revue

Raman spectroscopy investigation on (Pb1-xLax)(Zr0.90Ti0.10)(1-x/4)O-3 ceramic system

Abstract : A Raman spectroscopy study at room temperature was carried out on (Pb1-xLax)(Zr0.90Ti0.10)(1-x/4)O-3 ceramics (x = 2, 3, 4 at%). The results were analyzed considering the x-ray patterns at room temperature showing a mixture of two phases: a rombohedral-ferroelectric phase and an orthorhombic-antiferroelectric, increasing the% of the second one with the lanthanum concentration. For x = 3 at%, the analysis was also carried out in a wide temperature range. Two anomalies were evaluated, one around 363 K, which has been associated to a ferroelectric-antiferroelectric phase transition; the second one around 430 K, which has been associated to a transition from an incommensurable state to a ferroelectric phase. (C) 2016 Elsevier B.V. All rights reserved.
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Soumis le : vendredi 1 avril 2022 - 13:59:43
Dernière modification le : mardi 13 septembre 2022 - 14:34:32

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A. Pelaiz-Barranco, Y. Gonzalez-Abreu, Y. Gagou, P. Saint-Gregoire, J. D. S. Guerra. Raman spectroscopy investigation on (Pb1-xLax)(Zr0.90Ti0.10)(1-x/4)O-3 ceramic system. Vibrational Spectroscopy, Elsevier, 2016, 86, pp.124-127. ⟨10.1016/j.vibspec.2016.06.014⟩. ⟨hal-03627646⟩

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