Electric field stabilization for temperature driven variation of permittivityin ferroelectric devices

The Ginzburg-Devonshire phenomenological approach is used to define the correlation between temperature and electric field magnitudes required to keep permanent values of permittivity of ferroelectrics in rather broad range of operating temperatures. The existence of a crossover of the electric fiel...

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Bibliographic Details
Published in:Applied physics letters 2005-11, Vol.87 (21), p.212909-212909-3
Main Authors: Prudan, A. M., Kozyrev, A. B., Osadchy, V. N., Kosmin, D. M., Kaydanova, T., Ginley, D.
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Summary:The Ginzburg-Devonshire phenomenological approach is used to define the correlation between temperature and electric field magnitudes required to keep permanent values of permittivity of ferroelectrics in rather broad range of operating temperatures. The existence of a crossover of the electric field dependencies for ε at different temperatures is demonstrated theoretically. It makes it possible to establish the upper limit of electrical field strength necessary to provide the thermal stability of ferroelectric devices. Theoretical results have been confirmed experimentally with ( Ba , Sr ) TiO 3 thin film measurements.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2125107