Brillouin scattering study on relaxor ferroelectric Pb(Zn1/3Nb2/3)O3

The 90° Brillouin scattering experiment has been performed on a Pb(Zn1/3Nb2/3)O3 single crystal. The frequency shift and linewidth of the c33 pure longitudinal acoustic mode and the c44 pure transverse mode show bending anomalies near Tm=397 K, at which the low-frequency dielectric constant ε has a...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2003-08, Vol.83 (7), p.1358-1360
Main Authors: Gorouya, Yoshihiro, Tsujimi, Yuhji, Iwata, Makoto, Yagi, Toshirou
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The 90° Brillouin scattering experiment has been performed on a Pb(Zn1/3Nb2/3)O3 single crystal. The frequency shift and linewidth of the c33 pure longitudinal acoustic mode and the c44 pure transverse mode show bending anomalies near Tm=397 K, at which the low-frequency dielectric constant ε has a maximum value. In addition to the acoustic modes, a relaxational mode is found in the form of a central peak. The relaxation time τ of the mode has a temperature dependence similar to that of ε and shows a broad peak anomaly around Tm. The temperature dependence of τ can be analyzed by a modified superparaelectric model.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1603340