Coexistence of monoclinic and tetragonal phases in PMN-PT single crystal
Araujo, E. B. · Guarany, C. A. · Yukimitu, K. · Moraes, J. C. S. · Hernandes, A. C.
Original · EN
The purpose of the present work is to report studies on structural phase transition for PMN-xPT single crystal, with melt PbTiO3 composition around the MPB (x = 0.35 mol %), using infrared spectroscopy technique. The study was centered on monitoring the behavior of the stretching-(Nb-O), stretching-(Ti-O) and stretching-(Mg-O) stretching modes as a function of temperature. Singularities observed between 198 and 300 K suggested a possible coexistence between the monoclinic and tetragonal phases, not revealed by others techniques, for PMN-PT composition studied near MPB.
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