Role of the TiO6 octahedra on the ferroelectric and piezoelectric behaviour of the poled PbMg1/3Nb2/3O3–xPbTiO3 (PMN–PT) single crystal and textured ceramic

Abstract

To cite this version:A. Slodczyk, Ph. Colomban, M. Pham-Thi. Role of the TiO octahedra on the ferroelectric and piezoelectric behaviour of the poled PbMgNbO-xPbTiO (PMN-PT) single crystal and textured ceramic. Journal of Physics and Chemistry of Solids, Elsevier, 2009, 69 (10) This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.A c c e p t e d m a n u s c r i p t temperature indicates precisely the continuous evolution of the local symmetry towards the cubic one. The temperature evolution of the Rayleigh wing parameters appears sensitive to the phase transitions presence.

Raman Intensity: An Important Tool in the Study οf Nanomaterials and Nanostructures

“…It is noteworthy that our studies confirm that the properties of the textured ceramics are very similar to those ones characteristic for single crystals. This result is very important from the application point of view and allows proposing the textured ceramic as the low cost alternative of the single crystal [5]. The Raman spectra presented in Fig.…”

“…• C [5], and thus shows that the true cubic symmetry can be achieved only at rather high temperature, i.e. much above the maximum of dielectric permittivity.…”

“…Origin Peak Fitting software was used to decompose the Raman spectra following the procedure described in our previous works [3,5,7].…”

“…These superior properties are characteristic for the solid solutions from the so-called morphotropic phase boundary, i.e. the region of the phase diagram with the 30-38% PT content, and result from the complex, not well understood, physical behaviour [5]. The structural studies reveal the coexistence of different symmetries ordered for different scale, the nonpolar matrix with the chaotically embedded polar nanoregions.…”

“…Additionally, this paper completes the review recently published considering the relationship between the Raman signature, grain size and mechanical properties of nanosized or nanostructured materials [2]. The Raman intensity analysis allows us characterizing the complex physical behaviour for better possible industrial application in the case of perovskites: high temperature protonic conductors [4] and ferroelectric relax- * corresponding author; e-mail: philippe.colomban@glvt-cnrs.fr ors PbMg 1/3 Nb 2/3 O 3−x PbTiO 3 (PMN-PT) solid solutions [5]. This analysis is also essential to determine the composition, technology and age of the Cultural Heritage objects made of glass, glaze and enamel or to understand and optimize optical devices made of glass containing dispersed metal nanoparticles [6][7][8][9][10][11][12].…”