Raman scattering investigation with temperature of the phase transitions in (Pb0.825Ba0.175)ZrO3 and (Pb0.65Ba0.35)ZrO3 ceramics

Autor:	D. Dmytrow, I. El-Harrad, C. Carabatos-Nédelec, P. Becker, Z. Ujma, J. Handerek
Rok vydání:	1996
Předmět:	Phase transition Materials science Analytical chemistry chemistry.chemical_element Barium Dielectric Ferroelectricity Zirconate symbols.namesake chemistry visual_art Phase (matter) symbols visual_art.visual_art_medium Ceramic Spectroscopy Raman scattering
Zdroj:	Vibrational Spectroscopy. 10:301-309
ISSN:	0924-2031
DOI:	10.1016/0924-2031(95)00034-8
Popis:	Raman scattering investigations of lead-barium zirconate are presented for two barium concentrations, as a function of temperature from 10 to 450 K. An order-disorder phase transition is observed at 130 K for the low barium concentration, for which an antiferroelectric-ferroelectric phase transition is equally observed at 308 K and a ferroelectric-paraelectric one at 433 K. The ceramic containing a high barium concentration is in a ferroelectric state up to 403 K, above this temperature begins the paraelectric phase of the material. The order parameters of the two types of transitions, order-disorder and antiferroelectric-ferroelectric, are evaluated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e7e95cc9b7057dfca76d62c72992adb5 https://doi.org/10.1016/0924-2031(95)00034-8 Zobrazit plný text záznamu Full Text from ScienceDirect