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Proceedings Paper

Polarization switching in ferroelectric crystals with defects charged under photo- or UV-excitation
Author(s): Anna N. Morozovska
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Paper 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.

Paper Details

Date Published: 6 December 2006
PDF: 6 pages
Proc. SPIE 6023, Tenth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals, 60230P (6 December 2006); doi: 10.1117/12.648211
Show Author Affiliations
Anna N. Morozovska, V. Lashkaryov Institute of Semiconductor Physics (Ukraine)


Published in SPIE Proceedings Vol. 6023:
Tenth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals
Gertruda V. Klimusheva; Andrey Iljin; Sergey Al. Kostyukevych, Editor(s)

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