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- Title
Selective soft mode heating in a ferroelectric film.
- Authors
Prudan, A. M.; Mezenov, A. V.; Ktitorov, S. A.
- Abstract
The effect of electromagnetic radiation with a frequency of f ∼ 0.3 THz on the temperature of a soft-mode phonon subsystem in a (Ba,Sr)TiO3 film has been studied. Features of the temperature regimes in a ferroelectric capacitor structure were revealed using a capacitive thermometer and a thermocouple. It is established that, at a pumping radiation intensity of ∼6 mW/mm2, the overheating of soft-mode phonons, as evaluated from a change in the capacitance of a planar capacitor, exceeds the integral overheating of this capacitor measured using a thermocouple. Conditions determining the nonequilibrium state of the soft-mode phonon subsystem in a ferroelectric film are analyzed.
- Subjects
FERROELECTRIC thin films; ELECTROMAGNETIC waves; PHONONS; FERROELECTRICITY; HEAT
- Publication
Technical Physics Letters, 2007, Vol 33, Issue 5, p420
- ISSN
1063-7850
- Publication type
Article
- DOI
10.1134/S1063785007050173