Impedance spectroscopic investigation on phase transition and electrical conduction mechanism of the new inorganic-organic complex: (C6H9N2)2HgCl4 (I), (C6H9N2)2(Hg0.75Cd0.25)Cl4 (II) and (C6H9N2)2(Hg0.12Zn0.88)Cl4 (III)

Elwej, R.; Nasri, S.; Hlel, F.

doi:10.1016/j.jallcom.2016.05.172

Cited by 10 publications

(1 citation statement)

References 34 publications

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“…Therefore, the non‐overlapping small polaron tunneling (NSPT) model appears to be the most suitable model to explain the conduction mechanism in the present study. In fact, according to this model, the exponent s and the AC conductivity σ (ω) are given by equation: [ 36 ]

S = 1 + \frac{4 k_{normalB} T}{W_{normalH} - k_{normalB} T \ln (ω τ_{0})}

σ_{a c} = \frac{{(Π e)}^{2} K_{B} T α^{- 1} ω {[N (E F)]}^{2} R_{ω}^{4}}{12}

R_{ω} = \frac{1}{2 α} (Ln (\frac{1}{ω τ_{0}}) - \frac{W_{H}}{K_{normalB} T})

where W H is the polaron hopping energy, R ω is the tunneling distance then, N (EF) is the density of defect states, and α −1 is the spatial extension of the polaron ( α = 1 Å −1 ). [ 21 ]…”

Section: Methodsmentioning

confidence: 99%

Dielectric Relaxation and Non‐Overlapping Small Polaron Tunneling Model Conduction Studies of Ag_2‐_xNa_xZnP₂O₇ (x = 0, 1, and 2) Materials

Dhaou

Mallah

Alsawi

2021

Crystal Research and Technology

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The Ag2−xNaxZnP2O7 (x = 0, 1, and 2) materials are prepared using the solid–solid method followed by heat treatment. The investigated samples are characterized by combining X‐ray powder diffraction and electrical impedance spectroscopy techniques. The Rietveld refinement of the X‐ray diffraction (XRD) pattern revealed that these Ag2ZnP2O7, AgNaZnP2O7, and Na2ZnP2O7 compounds are indexed in the tetragonal system with the P42/n space group. Their dielectric properties are measured in the frequency and temperature ranges of 200–107 Hz and 419–518 K, respectively. In these compounds, the dielectric relaxation can be described by a Cole–Cole model. The frequency dependence of the conductivity is interpreted in terms of Jonscher's law. For the three compounds, the activation energy for conduction has a different value compared to the activation energy for the relaxation process. This indicates that the conduction in the compound is not predicted by the simple hopping model. Then, the temperature dependence of the power‐law exponent(s) suggests that the non‐overlapping small polaron tunneling model is the dominant transport process in these materials. Moreover, the values of defect states N(EF) and the tunnel distance RW show the electrical performance of the Ag2ZnP2O7 compound.

show abstract

S = 1 + \frac{4 k_{normalB} T}{W_{normalH} - k_{normalB} T \ln (ω τ_{0})}

σ_{a c} = \frac{{(Π e)}^{2} K_{B} T α^{- 1} ω {[N (E F)]}^{2} R_{ω}^{4}}{12}

R_{ω} = \frac{1}{2 α} (Ln (\frac{1}{ω τ_{0}}) - \frac{W_{H}}{K_{normalB} T})

Section: Methodsmentioning

confidence: 99%

Dielectric Relaxation and Non‐Overlapping Small Polaron Tunneling Model Conduction Studies of Ag_2‐_xNa_xZnP₂O₇ (x = 0, 1, and 2) Materials

Dhaou

Mallah

Alsawi

2021

Crystal Research and Technology

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Crystal structure, optical behavior and electrical conduction of the new organic–inorganic compound CH3NH3CdI3

Zhang

Wang

et al. 2018

J Mater Sci: Mater Electron

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Physical and Chemical Characterisations, Optical Properties and Dielectric Studies of a New Organic–Inorganic Material: bis(4-amino-2-chloropyridinium) Tetrachloromercurate (II) Monohydrate

Jellali,

Karâa,

Ghalla

et al. 2024

Chemistry Africa

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Impedance spectroscopic investigation on phase transition and electrical conduction mechanism of the new inorganic-organic complex: (C6H9N2)2HgCl4 (I), (C6H9N2)2(Hg0.75Cd0.25)Cl4 (II) and (C6H9N2)2(Hg0.12Zn0.88)Cl4 (III)

Cited by 10 publications

References 34 publications

Dielectric Relaxation and Non‐Overlapping Small Polaron Tunneling Model Conduction Studies of Ag_2‐_xNa_xZnP₂O₇ (x = 0, 1, and 2) Materials

Dielectric Relaxation and Non‐Overlapping Small Polaron Tunneling Model Conduction Studies of Ag_2‐_xNa_xZnP₂O₇ (x = 0, 1, and 2) Materials

Crystal structure, optical behavior and electrical conduction of the new organic–inorganic compound CH3NH3CdI3

Physical and Chemical Characterisations, Optical Properties and Dielectric Studies of a New Organic–Inorganic Material: bis(4-amino-2-chloropyridinium) Tetrachloromercurate (II) Monohydrate

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Impedance spectroscopic investigation on phase transition and electrical conduction mechanism of the new inorganic-organic complex: (C6H9N2)2HgCl4 (I), (C6H9N2)2(Hg0.75Cd0.25)Cl4 (II) and (C6H9N2)2(Hg0.12Zn0.88)Cl4 (III)

Cited by 10 publications

References 34 publications

Dielectric Relaxation and Non‐Overlapping Small Polaron Tunneling Model Conduction Studies of Ag2‐xNaxZnP2O7 (x = 0, 1, and 2) Materials

Dielectric Relaxation and Non‐Overlapping Small Polaron Tunneling Model Conduction Studies of Ag2‐xNaxZnP2O7 (x = 0, 1, and 2) Materials

Crystal structure, optical behavior and electrical conduction of the new organic–inorganic compound CH3NH3CdI3

Physical and Chemical Characterisations, Optical Properties and Dielectric Studies of a New Organic–Inorganic Material: bis(4-amino-2-chloropyridinium) Tetrachloromercurate (II) Monohydrate

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Product

Resources

About

Dielectric Relaxation and Non‐Overlapping Small Polaron Tunneling Model Conduction Studies of Ag_2‐_xNa_xZnP₂O₇ (x = 0, 1, and 2) Materials

Dielectric Relaxation and Non‐Overlapping Small Polaron Tunneling Model Conduction Studies of Ag_2‐_xNa_xZnP₂O₇ (x = 0, 1, and 2) Materials