- Tytuł:
- Dielectric and AC Conductivity οf Potassium Perchlorate, $KCLO_{4}$
- Autorzy:
- Abdelmoneim, H.
- Powiązania:
- https://bibliotekanauki.pl/articles/1537744.pdf
- Data publikacji:
- 2010-06
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
72.80.Ph
77.22.Ch
77.84.Bw - Opis:
- The AC conductivity σ (ω) and the complex dielectric permittivity ε*(ω) were studied as function of temperature 300 K < T < 600 K and at some selected frequencies (1-20 kHz) for polycrystalline sample of $KClO_4$. The differential thermal analysis (DTA) thermograph was also performed. The combined data support each other and indicate the existence of a structural phase transition at ≈ 575 K. Moreover, the temperature dependence of the ac conductivity behaves in accordance with Arrhenius relation, whereas the frequency dependent conductivity obeys the power law $σ(ω) = Aω^{s(T)}$. The behavior of s with temperature suggests that the hopping over the barrier model prevails. No evidence for the existence of a ferroelectric phase transition at the transition temperature.
- Źródło:
-
Acta Physica Polonica A; 2010, 117, 6; 936-940
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł