Electrical conductivity and dielectric relaxation studies of a polymeric hybrid compound: ([C2H10N2]CdCl2(SCN)2)n

被引：11
|
作者：
Saidi, K. [1 ]
Kamoun, S. [1 ]
Ayedi, H. Ferid [1 ]
机构：
[1] BPW, Lab Genie Mat & Environm, ENIS, Sfax 1173, Tunisia
来源：
IONICS | 2014年 / 20卷 / 11期
关键词：
Cadmium thiocyanates; Electrical conductivity; Dielectric relaxation; Complex polarizability; Electric modulus; Conduction mechanism; FREQUENCY-DEPENDENT CONDUCTIVITY; KOHLRAUSCH-WILLIAMS-WATTS; DOMAIN HAVRILIAK-NEGAMI; CRYSTAL-STRUCTURE; AC CONDUCTIVITY; POLARIZATION;
D O I：
10.1007/s11581-014-1101-8
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Electrical conductivity and dielectric measurements of ([C2H10N2]CdCl2(SCN)(2))(n) were carried out from 200 Hz-5 MHz over a temperature range of 307-352 K. The frequency dependence of electrical data have been analyzed in two frameworks: the electrical modulus formalism with the Kohlrausch-Williams-Watts (KWW) stretched exponential function and the electrical conductivity by using the Jonscher's power law sigma'(Tot)(omega,T) = sigma(DC)(T) + A(T)omega(s(T)) in the frequency domain. The conduction mechanism is attributed to the nonoverlapping small polaron tunneling (NSPT) model. Furthermore, the dielectric data have also been analyzed in modulus and polarizability formalisms. The close values of activation energies obtained from the conductivity, the relaxation process, the electric modulus, and the complex polarizability data confirm that the transport is through ion-hopping mechanism.
引用
收藏
页码：1617 / 1625
页数：9
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