Polarization switching in ferroelectric crystals with defects charged under photo- or UV-excitation

Anna N. Morozovska

doi:10.1117/12.648211

6 December 2006 Polarization switching in ferroelectric crystals with defects charged under photo- or UV-excitation

Anna N. Morozovska

Proceedings Volume 6023, Tenth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals; 60230P (2006) https://doi.org/10.1117/12.648211
Event: Tenth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals, 2005, Alushta, Ukraine

Abstract

We have proposed the phenomenological description of dielectric hysteresis loops in ferroelectric semiconductors with impurity centers charged under photo- or UV excitation. Exactly we have modified Landau-Ginsburg approach and shown that the macroscopic state of the aforementioned inhomogeneous system can be described by three coupled equations for three order parameters. Both the experimentally observed coercive field values well below the thermodynamic one and the various hysteresis loop deformations (constricted and double loops) have been obtained in the framework of our model.

Citation Download Citation

Anna N. Morozovska "Polarization switching in ferroelectric crystals with defects charged under photo- or UV-excitation", Proc. SPIE 6023, Tenth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals, 60230P (6 December 2006); https://doi.org/10.1117/12.648211

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