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Phase transition behavior of BaZr x Ti 1− x O 3 ceramics
Author(s) -
Dobal P. S.,
Dixit A.,
Katiyar R. S.,
Yu Z.,
Guo R.,
Bhalla A. S.
Publication year - 2001
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/1097-4555(200101)32:1<69::aid-jrs673>3.0.co;2-3
Subject(s) - tetragonal crystal system , raman spectroscopy , orthorhombic crystal system , phase transition , materials science , ceramic , dielectric , analytical chemistry (journal) , phase (matter) , transition temperature , mineralogy , crystallography , chemistry , crystal structure , condensed matter physics , metallurgy , optics , superconductivity , physics , optoelectronics , organic chemistry , chromatography
BaZr x Ti 1− x O 3 ceramics were prepared for x = 0, 0.05, 0.08, 0.15 and 0.20 using a solid‐state reaction technique. The evolution of the Raman spectra with temperature was used to study the variation of the basic phase transition temperatures of BaTiO 3 in these compositions. The tetragonal to cubic transition temperature on heating was found to decrease with increasing Zr content. The orthorhombic to tetragonal transition temperature, which increases with initial increase in Zr content, merges with the tetragonal to cubic transition for x ≥ 0.15 compositions. These Raman results are in excellent agreement with those obtained from dielectric measurements. Copyright © 2001 John Wiley & Sons, Ltd.