TITLE

Evidence of the relaxor-paraelectric phase transition in Pb(Fe[sub 2/3]W[sub 1/3])O[sub 3] ceramics

AUTHOR(S)
Mitoseriu, Liliana; Carnasciali, Maria M.; Piaggio, Paolo; Nanni, Paolo
PUB. DATE
December 2002
SOURCE
Applied Physics Letters;12/23/2002, Vol. 81 Issue 26, p5006
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The transition relaxor-paraelectric in Pb(Fe[sub 2/3]W[sub 1/3])O[sub 3] ceramics was studied by x-ray diffraction and Raman scattering at temperatures in the range of 85-800 K. For high diffraction angles (160° and 162°), a slight difference between the two phases was found. Raman spectra show an evolution with temperature with anomalies of bands of 848 cm[sup -1] and 147 cm[sup -1] (shift and intensity) in the Curie range of temperatures. This behavior is interpreted as an experimental evidence of perturbations of the nanopolar ordering related to the phase transition.
ACCESSION #
8691534

 

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