- Tytuł:
- Dielectric and Dilatometric Properties of NH(CH$\text{}_{3}$)$\text{}_{3}$CuCl$\text{}_{3}$·2H$\text{}_{2}$O Low Dimensional Ferroics
- Autorzy:
-
Korchak, Yu.
Kapustianik, V.
Batiuk, A.
Girnyk, I.
Czapla, Z.
Dacko, S. - Powiązania:
- https://bibliotekanauki.pl/articles/1872270.pdf
- Data publikacji:
- 2004-07
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
- 64.70.-p
- Opis:
- On the basis of dilatometric and dielectric investigations of NH(CH$\text{}_{3}$)$\text{}_{3}$CuCl$\text{}_{3}$·2H$\text{}_{2}$O crystals the earlier unknown phase transition with considerable temperature hysteresis was found at T$\text{}_{1}^{c}$=198 K and T$\text{}_{1}^{h}$=223 K, respectively, in cooling and heating runs. Existence of the characteristic dielectric dispersion was revealed within the high-temperature phase. It corresponds to the single dielectric relaxator below 250 K as well as to co-existence of two relaxators above this temperature. The determined values of the activation energy and relaxation time are characteristic of the co-operative reorientation of the trimethylammonium cation (high-frequency relaxator) whereas the combined reorientation motions of the CuCl$\text{}_{2}$·2H$\text{}_{2}$O chains would be responsible for the low-frequency relaxation process. It was found that the above mentioned quasi-Debye type processes are involved into the mechanisms of the protonic conductivity.
- Źródło:
-
Acta Physica Polonica A; 2004, 106, 1; 39-49
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł