Temperature Dependence of Dispersion Relation of Over-Damped E- Polariton in BaTiO_3
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概要
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The temperature dependence of the dispersion relation of the over-damped E-polariton in BaTiO_3 is presented. The low-frequency dielectric constant ε_a has been obtained from the slope of the polariton dispersion relation. From the best fit of the spectra, both the quasi-harmonic frequency of E-phonon ω_0 and its damping constant γ were determined. The values of the dielectric constant ε_a were compared to those obtained from the capacitance measurements. The discrepancy of the temperature dependence of the dielectric constants in several frequency regions suggests that there is a dielectric dispersion of the relaxation type around a few hundred MHz.
- 社団法人日本物理学会の論文
- 1975-09-15
著者
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NAKAMURA Terutaro
The Institute for Solid State Physics,Tokyo University
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TOMINAGA Yasunori
The Institute for Solid State Physics,The University of Tokyo
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Nakamura Terutaro
The Institute For Solid State Physics The University Of Tokyo
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Nakamura Terutaro
The Institute For Soild State Physics The University Of Tokyo:department Of Electronics Tokai Univer
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Tominaga Yasunori
The Institute For Solid State Physics The University Of Tokyo
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