Dielectric Relaxation Behavior and AC Electrical Conductivity Study of 2-(1,2-Dihydro-7-Methyl-2-Oxoquinoline-5-yl) Malononitrile (DMOQMN)

G.F.Salem ; M.M. El- Nahass ; E.F.M. EL-Zaidia ; A.A.A. Darwish 


Abstract


© 2016, The Minerals, Metals & Materials Society. Dielectric relaxation and alternative current conductivity of a new organic compound 2-(1,2-dihydro-7-methyl-2-oxoquinoline-5-yl) malononitrile (DMOQMN) have been investigated. X-ray diffraction (XRD) at room temperature reveals that DMOQMN samples have a polycrystalline structure of the triclinic system. The analysis of the dielectric constant and dielectric loss index suggested the dominant polarization is performed and the Maxwell–Wagner–Sillar type polarization is dominating at low frequency and high temperature. These results have been confirmed by the XRD and dielectric modulus. The estimated relaxation time and the activation energy are 9 × 10 −13  s and 0.43 eV, respectively. Our results indicated that the conduction mechanism of DMOQMN is controlled by the correlation barrier hopping (CBH) model.


Other data

Keywords Organic compounds -x-ray diffraction -dielectric properties -electrical conductivity
Issue Date 1-Feb-2017
Journal Journal of Electronic Materials 
Series/Report no. ;1092-1099
URI http://api.elsevier.com/content/abstract/scopus_id/84994222179
http://research.asu.edu.eg/123456789/562
DOI 1093
10.1007/s11664-016-5005-4


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