An analysis of the dynamic dielectric and electro-optic relaxation response of thin-film ferroelectrics is presented. The analysis is based upon the relaxation of ferroelectric domains with a continuous distribution of sizes given by percolation theory. The resulting temporal response is described by the expression Φ(t) ∝t-m exp[-(t/τ)β]. The analysis was applied to KNbO3 thin films. Measurements of the polarization, birefringence, and dielectric transients show qualitative agreement with the model over II orders of magnitude in time.
|Original language||English (US)|
|Number of pages||5|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - Jun 1 2002|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics