Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1249511 | Vibrational Spectroscopy | 2016 | 4 Pages |
Abstract
A Raman spectroscopy study at room temperature was carried out on (Pb1−xLax)(Zr0.90Ti0.10)1−x/4O3 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.
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Authors
A. Peláiz-Barranco, Y. González-Abreu, Y. Gagou, P. Saint-Grégoire, J.D.S. Guerra,