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Inne
On the dynamic dielectric behaviour of (CH3NH3)3Sb2I9 (MAIA) single crystals.
Autorzy
Rok wydania
1998
Czasopismo
Numer woluminu
108
Strony
247-250
DOI
10.1016/S0038-1098(98)00318-4
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The dielectric permittivity of (CH3NH3)3Sb2I9 (MAIA) single crystals has been measured in frequency range from 100 Hz to 10 GHz and in the temperature range from 10 K to 300 K. The low frequency dielectric relaxation found in the range from 40 to 60 K has very similar properties as the high frequency relaxation observed in the 100 MHz–10 GHz range near and above the 147 K phase transition. Both are of Cole–Cole type and thermally activated with an activation energy of 0.06 eV and 0.095 eV below and above the phase transition, respectively, without a critical behaviour at the transition temperature. The relaxation observed in the low temperature phase is not associated with the mechanism of the phase transition.
Słowa kluczowe
Dielectric response, phase transitions
Adres publiczny
https://doi.org/10.1016/S0038-1098(98)00318-4
Strona internetowa wydawcy
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