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Brillouin and Raman Scattering Studies on the Relaxor Ferroelectric 0.71Pb(Ni1/3Nb2/3)O3-0.29PbTiO3 Single Crystal

Published online by Cambridge University Press:  26 February 2011

Shinya Tsukada
Affiliation:
s-tsukada@ims.tsukuba.ac.jp, University of Tsukuba, Graduate School of Pure and Applied Sciences, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan, +81-29-853-5262, +81-29-853-5262
Yuji Ike
Affiliation:
s-ike@ims.tsukuba.ac.jp, University of Tsukuba, Graduate School of Pure and Applied Sciences, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan
Jun Kano
Affiliation:
kanojun@ims.tsukuba.ac.jp, University of Tsukuba, Graduate School of Pure and Applied Sciences, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan
Ruiping Wang
Affiliation:
rp-wang@aist.go.jp, AIST, 1-1-1 Umezono, Tsukuba, 305-8564, Japan
Yoshiro Shimojo
Affiliation:
y-shimojo@aist.go.jp, AIST, 1-1-1 Umezono, Tsukuba, 305-8564, Japan
Tadashi Sekiya
Affiliation:
t-sekiya@aist.go.jp, AIST, 1-1-1 Umezono, Tsukuba, 305-8564, Japan
Seiji Kojima
Affiliation:
kojima@ims.tsukuba.ac.jp, University of Tsukuba, Graduate School of Pure and Applied Sciences, 1-1-1 Tennodai, Tsukuba, 305-8571, Japan
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Abstract

Brillouin and Raman spectra of a 0.71Pb(Ni1/3Nb2/3)O3-0.29PbTiO3 single crystal were measured in two light scattering geometries to elucidate the origins of central peaks that is related to the dynamics of the polar nanoregions.Two Lorentzian-type central peaks exist in the Brillouin spectra.The shape and the full width at half maximum of the broader peak in Brillouin spectra are almost same as that observed in Raman spectra.This indicates that two relaxations occur in the polar nanoregions.These two processes might be originated from the different switching directions of polarization.

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Type
Research Article
Copyright
Copyright © Materials Research Society 2007

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