Raman Scattering From Soft E(TO) Phonons Of The Pb(Ti1-xZrx,)O3 System
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...
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todo:paper_00150193_v7_n1_p275_Merlin2023-10-03T14:13:21Z Raman Scattering From Soft E(TO) Phonons Of The Pb(Ti1-xZrx,)O3 System Merlin, R. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00150193_v7_n1_p275_Merlin |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
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. |
| format |
JOUR |
| author |
Merlin, R. |
| spellingShingle |
Merlin, R. Raman Scattering From Soft E(TO) Phonons Of The Pb(Ti1-xZrx,)O3 System |
| author_facet |
Merlin, R. |
| author_sort |
Merlin, R. |
| title |
Raman Scattering From Soft E(TO) Phonons Of The Pb(Ti1-xZrx,)O3 System |
| title_short |
Raman Scattering From Soft E(TO) Phonons Of The Pb(Ti1-xZrx,)O3 System |
| title_full |
Raman Scattering From Soft E(TO) Phonons Of The Pb(Ti1-xZrx,)O3 System |
| title_fullStr |
Raman Scattering From Soft E(TO) Phonons Of The Pb(Ti1-xZrx,)O3 System |
| title_full_unstemmed |
Raman Scattering From Soft E(TO) Phonons Of The Pb(Ti1-xZrx,)O3 System |
| title_sort |
raman scattering from soft e(to) phonons of the pb(ti1-xzrx,)o3 system |
| url |
http://hdl.handle.net/20.500.12110/paper_00150193_v7_n1_p275_Merlin |
| work_keys_str_mv |
AT merlinr ramanscatteringfromsoftetophononsofthepbti1xzrxo3system |
| _version_ |
1807321462485286912 |