Title :
Dynamical properties of the relaxor ferroelectric 0.71Pb(Ni1/3Nb2/3)O3-0.29PbTiO3 probed by Brillouin and Raman scattering
Author :
Tsukada, S. ; Ike, Yuji ; Kano, Jun ; Sekiya, Tadashi ; Shimojo, Yoshihito ; Wang, Ruiping ; Kojima, S.
Author_Institution :
Tsukuba Univ., Tsukuba
Abstract :
Structural phase transitions in relaxor ferroelectric materials remain to be one of the most puzzling issues in solid-state physics. 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 showed anomalous behaviors at Burn´s temperature Td, freezing temperature Tf, those are related to a development of polar nanoregions (PNRs). PNR must play a key role in relaxor nature, and obtained results provide insight into the relaxational processes in the PNR and into how they develop below Tf.
Keywords :
Brillouin spectra; Raman spectra; crystal structure; dielectric relaxation; ferroelectric transitions; lead compounds; relaxor ferroelectrics; vibrational modes; Brillouin scattering; PbNi0.33Nb0.67O3-PbTiO3; Raman scattering; inelastic light scattering measurements; polar nanoregions; relaxational property; relaxor ferroelectric materials; structural phase transitions; vibrational property; Acoustic scattering; Brillouin scattering; Light scattering; Optical scattering; Raman scattering; Rayleigh scattering; Relaxor ferroelectrics; Spectroscopy; Temperature; X-ray scattering;
Conference_Titel :
Applications of Ferroelectrics, 2007. ISAF 2007. Sixteenth IEEE International Symposium on
Conference_Location :
Nara
Print_ISBN :
978-1-4244-1334-8
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2007.4393242
