Artigo
Structural Phase Transition Studies on PMN-0.35PT using Infrared Spectroscopy
Fecha
2008-01-01Registro en:
Ferroelectrics. Abingdon: Taylor & Francis Ltd, v. 369, p. 35-42, 2008.
0015-0193
10.1080/00150190802371911
WOS:000260677500006
6725982228402054
8507741729691974
Autor
Universidade Estadual Paulista (Unesp)
Universidade de São Paulo (USP)
Resumen
The purpose of the present work is to report studies on structural phase transition for PMN-xPT ferroelectric, 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 1-(NbO), 1-(TiO) and 1-(MgO) stretching modes as a function of temperature. The increasing as a function of temperature for 1-(TiO) and 1-(MgO) modes, observed between 230 and 300 K, can be related to the monoclinic (MC) + tetragonal (T) phase coexistence in the PMN-PT.