Low-frequency Raman scattering study of the ferroelectric phase transition in the DKDP crystal
β Scribed by V. K. Malinovsky; A. M. Pugachev; N. V. Surovtsev
- Book ID
- 111446117
- Publisher
- SP MAIK Nauka/Interperiodica
- Year
- 2008
- Tongue
- English
- Weight
- 236 KB
- Volume
- 50
- Category
- Article
- ISSN
- 1063-7834
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We obtained Raman scattermg spectra of normal and deuterated TSCC crystals and one TSCC,\_,B, mived crystal (Cl-x = Cl. Et, = Br). The soft-mode behavlour IS studted m the temperature range from 80 K to the Curie pomt. The Land T component of the soft mode are overdamped near 100 K whale the oblique
The antiferroelectric to ferroelectric phase transition in was investigated by Raman scattering between NaNbO 3 295 and 10 K. The transition occurs at 185 K on cooling and the antiferroelectric and ferroelectric phases coexist at low temperature. The transition occurs at 210 K on heating and the rel