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arXiv · 0901.2421

Paraelectric in a Strong High-Frequency Field

A. I. Sokolov
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Abstract

A change in the effective permittivity of a ferroelectric film in the paraelectric phase under the action of a strong high-frequency field (nonequilibrium soft mode heating) is considered. It is shown that this effect must be most clearly pronounced far from the resonance (ω_0 << ω_sm), rather than for the external field frequency ω_0 close to the soft mode frequency ω_sm. The effective permittivity as a function of the high-frequency field amplitude is calculated using the phenomenological approach and within the microscopic theory based on the simple model of a displacement-type ferroelectric.

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A. I. Sokolov. 2009-01-16. Paraelectric in a Strong High-Frequency Field. https://doi.org/10.1134/s106378500805026x

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