Dynamic response of the dielectric and electro-optic properties of epitaxial ferroelectric thin films

Details Dynamic response of the dielectric and electro-optic properties of epitaxial ferroelectric thin films Dynamic response of the dielectric and electro-optic properties of epitaxial ferroelectric thin films

2002-04-30

arxiv.org/abs/cond-mat/0205007v1

Physics

Condensed Matter

Materials Science

19 pages, 4 figures, single column, accepted for publication in PRB

Scientific paper

10.1103/PhysRevB.65.224110

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 (t^-m) exp(-(t/tau)^beta). The analysis was applied to KNbO3 thin films. Measurements of the polarization, birefringence and dielectric transients show qualitative agreement with the model over 11 orders of magnitude in time.

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