Characterization of organic–inorganic hybrid layered perovskite and intercalated compound (n-C12H25NH3)2ZnCl4
| Autor: | M. M. Abdel-Kader, W. M. Gamal, A.I. Aboud |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Phase transition
Materials science Intercalation (chemistry) Analytical chemistry Halide Mineralogy 02 engineering and technology Dielectric Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Differential thermal analysis Phase (matter) General Materials Science 0210 nano-technology Instrumentation Perovskite (structure) |
| Zdroj: | Phase Transitions. 89:448-470 |
| ISSN: | 1029-0338 0141-1594 |
| Popis: | We report on some electrical properties and solid–solid phase transitions of organic–inorganic hybrid layered halide perovskite and intercalated compound (n-C12H25NH3)2ZnCl4 which is one member of the long-chain compounds of the series (n-CnH2n+1NH3)2,(n = 8–18). The complex dielectric permittivity ϵ*(ω,T) and the ac conductivity σ (ω,T) were measured as functions of temperature 100 K < T < 390 K and frequency 5 kHz < f < 100 kHz. Moreover, the differential scanning calorimetery and the differential thermal analysis thermograms were performed. The analysis of our data confirms the existence of a structural phase transition at T ≈ (362 ± 2) K, where the compound changes its state from intercalation to non-intercalation with a drastic increase in the c-axis by about 16.4%.The behavior of the frequency-dependent conductivity follows the Jonscher universal power law: σ (ω, T) αῳs(ῳ,T). The mechanism of electrical conduction in the low-temperature phase (phase II) can be described as quantum mechanical tunneli... |
| Databáze: | OpenAIRE |
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