Dynamical properties of the relaxor ferroelectric 0.71Pb(Ni/sub 1/3/Nb/sub 2/3/)O/sub 3/-O.29PbTiO/sub 3/ probed by brillouin and raman scattering

Structural phase transitions in relaxor ferroelectric materials remain to be one of the most puzzling issues in materials science. In the present work, we have investigated relaxational and vibrational properties of a relaxor ferroelectric 0.71 Pb(Ni 1/3 Nb 2/3 )O 3 -0.29PbTiO 3 single crystal by me...

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Bibliographic Details
Published inIEEE transactions on ultrasonics, ferroelectrics, and frequency control Vol. 54; no. 12; pp. 2632 - 2636
Main Authors Tsukada, S., Ike, Y., Jun Kano, Kojima, S., Sekiya, T., Shimojo, Y., Ruiping Wang
Format Journal Article
LanguageEnglish
Published IEEE 01.12.2007
Subjects
Brillouin scattering
Cooling
Dielectric constant
Ferroelectric materials
Light scattering
Raman scattering
Relaxor ferroelectrics
Spectroscopy
Temperature
Vibration measurement
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Summary:Structural phase transitions in relaxor ferroelectric materials remain to be one of the most puzzling issues in materials science. In the present work, we have investigated relaxational and vibrational properties of a relaxor ferroelectric 0.71 Pb(Ni 1/3 Nb 2/3 )O 3 -0.29PbTiO 3 single crystal by means of inelastic light scattering measurements. Analysis based on the spectra has shown anomalous behaviors at Burns' temperature T d , freezing temperature T f , those are related to a development of polar nanoregions (PNRs). The PNR must play a key role in the relaxor nature, and obtained results provide new insights into the relaxational dynamics in the PNRs and into how they develop below T f .
ISSN:0885-3010
1525-8955
DOI:10.1109/TUFFC.2007.590