Abstract
The AC conductivity of the compound, C12H14N2CuCl4, in the temperature and frequency range from 373 to 423 K and 209 Hz – 5 MHz, respectively, is reported. The differential scanning calorimetry and thermogravimetric analysis indicate the presence of a phase transition at 400 K. The Z’ and Z’’ vs. frequency plots are found to be well fit by using the equivalent circuit model. The circuits consist of a parallel combination of bulk resistance Rp and constant phase element. Besides, the analysis of the experimental data based on the jump relaxation model shows that the translation motion of the charge carrier and reorientation hopping between the equivalent sites of the metal chloride anion and the cation groups are responsible for the observed AC conductivity in the temperature regions I (373–400 K) and II (400–423 K). The frequency dependence of the conductivity which follows the Arrhenius equation is interpreted in terms of Jonscher's law: σ (ω) = σdc +A ω S.
Highlights
Organic–inorganic hybrid materials have recently been synthesized in large quantities and their structures, performance and applications studied [1, 2]
The analysis of the experimental data based on the jump relaxation model shows that the translation motion of the charge carrier and reorientation hopping between the equivalent sites of the metal chloride anion and the cation groups are responsible for the observed AC conductivity in the temperature regions I (373–400 K) and II (400–423 K)
The main interest of this 742 | P a g e paper is the study of the thermal behavior and AC conductivity with the dielectric relaxation of the NH3(C6H4)2NH3CuCl4 compound at various temperatures
Summary
Organic–inorganic hybrid materials have recently been synthesized in large quantities and their structures, performance and applications studied [1, 2]. Organic molecules have specific properties of high fluorescence efficiency, large polarizability, plastic mechanical properties and structural diversity whereby inorganic materials may be characterized by a wide range of electronic properties, magnetic and dielectric transitions, substantial mechanical hardness and thermal stability [5]. Significant effort has been placed on both experimental and theoretical studies in this family of compounds in order to understand dynamical behavior. Most of this family members exhibit a structural phase transition with temperature [7, 8]. The AC conductivity and dielectric relaxation behavior of C12H14N2CuCl4 single crystal have been studied as a function of temperature and frequency
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