Monoclinic phase of PbZr0.52Ti0.48O3 ceramics: Raman and phenomenological thermodynamic studies

Authors
Souza, AG Lima, KCV Ayala, AP Guedes, I Freire, PTC Mendes, J Araujo, EB Eiras, JA
Citation
Ag. Souza et al., Monoclinic phase of PbZr0.52Ti0.48O3 ceramics: Raman and phenomenological thermodynamic studies, PHYS REV B, 61(21), 2000, pp. 14283-14286
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
61
Issue
21
Year of publication
2000
Pages
14283 - 14286
Database
ISI
SICI code
0163-1829(20000601)61:21<14283:MPOPCR>2.0.ZU;2-#
Abstract
This work reports Raman detection of the tetragonal --> monoclinic phase tr ansition in PbZr0.52Ti0.48O3 ceramics near the morphotropic phase boundary at low temperatures. The transition is characterized by changes in the freq uency of lattice modes with temperature. The results presented here confirm the previous one recently reported by Noheda et al. [Appl. Phys. Lett. 74, 2059 (1999)] using high-resolution synchrotron x-ray powder diffraction te chnique and dielectric measurements. The stability of the new phase is disc ussed within the framework of phenomenological Landau-Devonshire theory.