Using x-ray diffraction, differential scanning calorimetry, polarizing microscopy and dielectric
spectroscopy, we study the phase transition from an ergodic relaxor state to a ferroelectric …

The acoustic anomalies and precursor dynamics of high-quality barium titanate single
crystals were investigated by Brillouin light scattering and the birefringence measurements …

This paper reviews the recent progress in the understanding of the dynamics of Pb (B1/2B′
1/2) O3-type relaxor ferroelectrics using of broadband micro-Brillouin scattering …

Relaxor ferroelectrics show substantial responses to electric fields. The key difference from
normal ferroelectrics is a temperature-dependent inhomogeneous structure and its …

The broadband gigahertz dynamics of a relaxor ferroelectric crystal 0.70 Pb (Sc 1/2 Nb 1/2)
O 3-0.30 PbTiO 3 with a composition close to the starting point of the morphotropic phase …

The precursor dynamics of relaxor ferroelectrics are studied by Brillouin and Raman
scattering. Above TC, Raman scattering spectra reflect the existence of polar nanoregions …

Brillouin spectra measurements have been carried out from 800 to 100 K for Pb (Sc 1/2 Ta
1/2) O 3 in back-scattering geometry. The frequency of the longitudinal acoustic (LA) phonon …

The relaxation dynamics of a Blume-Capel model with a quenched diluted crystal field is
formulated by a method combining the statistical equilibrium theory and the thermodynamics …

A cooling and heating stage has been developed to investigate the properties of materials
under temperature gradients. We utilized the ferroelectric material BaTiO 3 to show the …

A strong relaxation mode was observed in the gigahertz frequency window in the
paraelectric phase of Ba 0.80 Ca 0.20 TiO 3 single crystals by using Brillouin light scattering …