Title :
Dynamical properties of the relaxor ferroelectric 0.71Pb(Ni13/Nb23/)O3-O.29PbTiO3 probed by brillouin and raman scattering
Author :
Tsukada, Shinya ; Ike, Yuji ; Kano, Jun ; Kojima, Seiji ; Sekiya, Tadashi ; Shimojo, Yoshiro ; Wang, Ruiping
Author_Institution :
Univ. of Tsukuba, Ibaraki
fDate :
12/1/2007 12:00:00 AM
Abstract :
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 0.71Pb(Ni1/3Nb2/3)O3-0.29PbTiO3 single crystal by means of inelastic light scattering measurements. Analysis based on the spectra has shown anomalous behaviors at Burns´ temperature Td, freezing temperature Tf, 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 Tf.
Keywords :
Brillouin spectra; Raman spectra; freezing; lead compounds; relaxor ferroelectrics; Brillouin scattering; Burns temperature; Pb(Ni0.33Nb0.67)O3-PbTiO3; Raman scattering; freezing temperature; inelastic light scattering; polar nanoregions; relaxor ferroelectric single crystal; Brillouin scattering; Cooling; Dielectric constant; Ferroelectric materials; Light scattering; Raman scattering; Relaxor ferroelectrics; Spectroscopy; Temperature; Vibration measurement; Electric Impedance; Kinetics; Lead; Light; Materials Testing; Molecular Conformation; Molecular Probe Techniques; Scattering, Radiation; Spectrum Analysis, Raman; Temperature; Titanium;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2007.590
