Dynamical properties of the relaxor ferroelectric 0.71Pb(Ni1/3Nb2/3))O3-O.29PbTiO3 probed by Brillouin and Raman scattering.
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(Ni(1/3)Nb(2/3))O(3)-O.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).
Tsukada
Shinya
S
Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan. stsukada@ims.tsukuba.ac.jp
Ike
Yuji
Y
Kano
Jun
J
Kojima
Seiji
S
Sekiya
Tadashi
T
Shimojo
Yoshiro
Y
Wang
Ruiping
R
D017097:Electric Impedance; D007700:Kinetics; D007854:Lead / Q000737:chemistry*; D008027:Light; D008422:Materials Testing; D008968:Molecular Conformation; D015336:Molecular Probe Techniques; D012542:Scattering, Radiation; D013059:Spectrum Analysis, Raman; D013696:Temperature; D014025:Titanium / Q000737:chemistry*
C481719:lead titanate; D007854:Lead; D014025:Titanium