The Raman spectra of ceramic samples of the Pb(Ti1-xZrx,)O3 system in its room temperature tetragonal phase have been recorded. In the frequency region of the soft phonons, the spectra show the band of the q ~ 0 soft EfTO) mode and an additional band, absent forr = 0, centered in the 50–60 cm1. The line-shape of the soft E(TO) phonon changes from underdamped to overdamped for x > 0.40. The x-dependence of the frequency of this mode indicates that it becomes unstable in the vicinity of the morphotropic, tetragonal-rhombohedral, phase-boundary. A brief thermodynamical discussion of the behavior of the soft E(TO) mode is given. © 1974, Taylor & Francis Group, LLC. All rights reserved.
Documento: | Artículo |
Título: | Raman Scattering From Soft E(TO) Phonons Of The Pb(Ti1-xZrx,)O3 System |
Autor: | Merlin, R. |
Filiación: | Dpto. de Fisica, Fac. de Cs. Exactas v Naturales, Ciudad Universitaria, Buenos Aires, Argentina Dpto. de Instrumentation, Com. Nac. de Energia Atdmica, Buenos Aires S29, Argentina |
Año: | 1974 |
Volumen: | 7 |
Número: | 1 |
Página de inicio: | 275 |
Página de fin: | 277 |
DOI: | http://dx.doi.org/10.1080/00150197408238019 |
Título revista: | Ferroelectrics |
Título revista abreviado: | Ferroelectrics |
ISSN: | 00150193 |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00150193_v7_n1_p275_Merlin |