- Tytuł:
- Quadrupole Relaxation of $\text{}^{79}$Br Nuclei in Ferroelectric (CH$\text{}_{3}$)$\text{}_{4}$NCdBr$\text{}_{3}$ (TMCB)
- Autorzy:
-
Baisa, D. F.
Chesnokov, E. D.
Czapla, Ż. - Powiązania:
- https://bibliotekanauki.pl/articles/1931611.pdf
- Data publikacji:
- 1994-05
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
- 64.70.Kb
- Opis:
- Investigations of temperature dependence of a nuclear quadrupole spin-lattice relaxation time of $\text{}^{79}$Br nuclei in ferroelectric (CH$\text{}_{3}$)$\text{}_{4}$NCdBr$\text{}_{3}$ are presented. It is shown that in paraelectric phase in the vicinity of phase transition temperature relaxation process is determined by critical fluctuations of electric field gradient. In ferroelectric phase relaxation is related to three different mechanisms, namely: lattice vibrations, CH$\text{}_{3¯}$ group reorientations and TMA cation motions. According to the results of measurements it is concluded that the phase transition is connected with ordering of TMA cations.
- Źródło:
-
Acta Physica Polonica A; 1994, 86, 3; 357-361
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł