Article ID Journal Published Year Pages File Type
1249511 Vibrational Spectroscopy 2016 4 Pages PDF
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.

Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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