Journal de Physique IV

Sommaire

J. Phys. IV France 126 (2005) 73-76
DOI: 10.1051/jp4:2005126015

Raman imaging of grain growth mechanism in highly textured Pb(Mg $_{\bf 1$ Nb $_{\bf 2$ )O $_{\bf 3}$ -PbTiO $_{\bf 3}$ piezoelectric ceramics*

P. Colomban¹ and Mai Pham Thi²

¹ Laboratoire de Dynamique, Interactions et Réactivité, UMR 7075 CNRS, Université Pierre et Marie Curie, 2 rue Henry Dunant, 94320 Thiais, France
² Thales Research & Technology France, Ceramic Materials & Devices, 91494 Orsay Cedex, France

Abstract
Pb(Mg_{1 / 3}Nb_{2 / 3})O₃-PbTiO₃ solid solution ((1-x)PMN-xPT) tape cast ceramics have been prepared by homo-epitaxial templated grain growth (HTGG) using cubic 0.75PMN-0.25 PT single crystal seeds as template (a few wt%) and x = 0.35 nanoparticles for the ceramic matrix. Raman imaging studied representative medium and highly textured ceramics. On the base of a previous study which has shown that the Raman peak centre of gravity depends on the solid solution composition whereas peak intensity is correlated to the unit-cell distortion, Raman imaging shows that the final composition and structure is very close to that of the matrix.

Raman imaging of grain growth mechanism in highly textured Pb(Mg Nb )O-PbTiO piezoelectric ceramics*

Raman imaging of grain growth mechanism in highly textured Pb(Mg $_{\bf 1$ Nb $_{\bf 2$ )O $_{\bf 3}$ -PbTiO $_{\bf 3}$ piezoelectric ceramics*