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
Raman scattering investigation of cesium plumbochloride, CsPbCl3, phase transitions
✍ Scribed by C. Carabatos-Nédelec; M. Oussaïd; K. Nitsch
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 213 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0377-0486
- DOI
- 10.1002/jrs.1005
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## Abstract In this work, we report the low‐temperature phase transition of sodium niobate (NaNbO~3~) ceramics at the antiferroelectric–ferroelectric phase studied by the Raman scattering technique over the temperature range 10–300 K. The spectral shape indicates that the phase transition occurs at
Raman spectra of were recorded in the temperature range 5-300 K. A continuous phase tran-(CH 3 NH 3 ) 2 SnCl 6 sition occurs at K. The fact that all the E modes of the ion and the ion remain T c = 155 CH 3 NH 3 ' SnCl 6 2degenerate in the low-temperature phase indicate that still has a trigonal stru