RAMAN-SCATTERING INVESTIGATION WITH TEMPERATURE OF THE PHASE-TRANSITIONS IN (PB0.825BA0.175)ZRO3 AND (PB0.65BA0.35)ZRO3 CERAMICS

Authors
ELHARRAD I BECKER P CARABATOSNEDELEC C HANDEREK J UJMA Z DMYTROW D
Citation
I. Elharrad et al., RAMAN-SCATTERING INVESTIGATION WITH TEMPERATURE OF THE PHASE-TRANSITIONS IN (PB0.825BA0.175)ZRO3 AND (PB0.65BA0.35)ZRO3 CERAMICS, Vibrational spectroscopy, 10(2), 1996, pp. 301-309
Citations number
12
Categorie Soggetti
Spectroscopy,"Chemistry Analytical","Chemistry Physical
Journal title
Vibrational spectroscopy → ACNP
ISSN journal
09242031
Volume
10
Issue
2
Year of publication
1996
Pages
301 - 309
Database
ISI
SICI code
0924-2031(1996)10:2<301:RIWTOT>2.0.ZU;2-3
Abstract
Raman scattering investigations of lead-barium zirconate are presented for two barium concentrations, as a function of temperature from 10 t o 450 K. An order-disorder phase transition is observed at 130 K for t he low barium concentration, for which an antiferroelectric-ferroelect ric phase transition is equally observed at 308 K and a ferroelectric- paraelectric one at 433 K. The ceramic containing a high barium concen tration is in a ferroelectric state up to 403 K, above this temperatur e begins the paraelectric phase of the material. The order parameters of the two types of transitions, order-disorder and antiferroelectric- ferroelectric, are evaluated.