Effect of high pressure on the Pb(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub>-PbTiO<sub>3</sub> solid solution. A Raman scattering investigation - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2004

Effect of high pressure on the Pb(Mg1/3Nb2/3)O3-PbTiO3 solid solution. A Raman scattering investigation

Résumé

We report a high-pressure Raman scattering investigation of (1−x)Pb(Mg1∕3Nb2∕3)O3-xPbTiO3 (PMN-PTx) , which is considered as a prototype relaxor-based piezoelectric. The observed spectral changes are important and it is the pressure-induced appearance of a sharp band at roughly 370  cm−1 for all investigated PMN-PTx , that allows the construction of a partial x-p phase diagram which is characterized by a high-pressure non-cubic structure. This high-pressure structure is very similar if not identical to the high-pressure structure of PMN. Finally, we present a discussion of the high-wavenumber part of the Raman spectrum in terms of a two-mode behavior, which suggests a very local order around Ti atoms.

Domaines

Matériaux
Fichier non déposé

Dates et versions

hal-00417955 , version 1 (17-09-2009)

Identifiants

Citer

B. Chaabane, Jens Kreisel, Pierre Bouvier, Guy Lucazeau, B. Dkhil. Effect of high pressure on the Pb(Mg1/3Nb2/3)O3-PbTiO3 solid solution. A Raman scattering investigation. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2004, 70 (13), p. 134114(5 p.). ⟨10.1103/PhysRevB.70.134114⟩. ⟨hal-00417955⟩
105 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More