Dielectric relaxation and ionic conductivity studies of (C6H20N3)BiCl6·H2O

Elfaleh, N.; Kamoun, S.

doi:10.1007/s11581-015-1450-y

Cited by 10 publications

(2 citation statements)

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“…The electric modulus formalism (M*) is particularly suitable to extract phenomena such as electrode polarization and conductivity relaxation . The complex electric modulus is defined as the reciprocal of the dielectric permittivity as given by:

M^{*} ()(, ω) = \frac{1}{ε^{*} ()(, ω)} = M^{'} ()(, ω) + i M^{″} ()(, ω) = \frac{(ε^{'} + i ε'')}{(ε'^{2} + ε''^{2})}

where M′ and M″ are the real and imaginary components of the electric modulus, respectively.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis, crystal structure and dielectric properties of C₆H₁₈N₂SbCl₅

Kharrat

Elfaleh

Kamoun

2016

J of Physical Organic Chem

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The result of the X-ray diffraction, differential scanning calorimetry and dielectric studies on a new crystal material C 6 H 18 N 2 SbCl 5 is presented. The new organic-inorganic compound has been synthesized and characterized by the X-ray diffraction method at 296(2) K. It crystallizes in the monoclinic P21/n space group. The cell dimensions are: a = 5.8617(1) Å, b = 15.7069(2) Å, c = 16.6693(2) Å, β = 97.627(1)°and Z = 4. The crystal structure consists of a discrete ionic layer of (C 6 H 18 N 2 ) 2+ cations and [SbCl 5 ] 2À anions linked via simple and bifurcated N-H · · · Cl hydrogen bonds. DSC analysis shows that this compound undergoes a phase transition at about (384 ± 2) K. AC and DC conductivities, complex dielectric permittivity ε* (ω) and complex electrical modulus M*(ω) were respectively studied as temperature and frequency functions. The combined data support each other and confirm the existence of a structural phase transition at about 384 K. Moreover, the temperature dependence of the DC conductivity and relaxation frequency followed the Arrhenius relation. The frequency dependence of the real part of the AC conductivity in both phases follows the Jonscher's universal dynamic law:The behavior of s(T) with temperature suggests that the hopping over barrier model (CBH) and the small polaron tunneling mechanism (SPTM) prevail in phases I and II, respectively.

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