Coexistence of monoclinic and tetragonal phases in PMN-PT single crystal

Details Coexistence of monoclinic and tetragonal phases in PMN-PT single crystal Coexistence of monoclinic and tetragonal phases in PMN-PT single crystal

2004-07-29

arxiv.org/abs/cond-mat/0407760v1

Physics

Condensed Matter

Materials Science

19 pages, 5 figures, submitted to Physical Review B

Scientific paper

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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