Elastic light scattering as a probe for detail in situ investigations of domain and phase evolution

Abstract

The new complex method is proposed and used for in situ studying of kinetics of different phase transformations. It is based on real-time registration of elastic light scattering and original mathematical treatment of experimental data in terms of geometrical transformations and phase transitions of percolation type. The angle distribution of transmitted/reflected laser beam intensity was registered with high time resolution. The domain kinetics during polarization reversal in PLZT transparent ceramics, the evolution of the heterophase structure near transition point in single crystals of Gd₂(MoO₄)₃ and kinetics of crystallite growth during rapid thermal annealing in amorphous thin films of Pb₅Ge₃O₁₁ were examined.

Key Words:

• Light scattering
• crystallization of amorphous films
• kinetics of ferroelectric domains
• heterophase structure
• geometrical transformations
• percolation