Temperature- and frequency-dependent dielectric properties of organic–inorganic hybrid compound: (C6H9N2)2(Hg0.75Cd0.25)Cl4. (February 2015)

• Record Type: Journal Article
• Authors: Elwej, R.; Hamdi, M.; Hannachi, N.; Hlel, F.
• Is Part Of: Materials research bulletin. Volume 62(2015:Feb.)
• Page Start: 42
• Page End: 51
• Publication Date: 2015-02
• Subjects: C. Impedance spectroscopy -- D. Dielectric properties -- D. Electrical properties; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2014.10.074
• Languages: English
• ISSNs: 0025-5408

Abstract

Graphical abstract: Highlights: We have synthesized a new hybrid compound of composition (C6H9N2)2(Hg0.75Cd0.25)Cl4. The Ac conductivity of the title material was studied as a function of frequency and temperature. The dielectric data have been analyzed in modulus formalism using KWW. Abstract: The bis-2-amino-4-picolinium tetrachloromercurate-cadmate compound (C6 H9 N2 )2 (Hg0.75 Cd0.25 )Cl4 was prepared by hydrothermal method and characterized by X-ray diffraction (XRD) technique. The electrical properties of the compound were studied using impedance spectroscopy in the frequency and temperature range of 200 Hz–5 MHz and 308–403 K, respectively. The equivalent circuit is modeled by a combination of a parallel Rp//CPE circuit to explain the impedance results. The dielectric data were analyzed using complex electrical modulus M * at various temperatures. The activation energy responsible for the relaxation calculated from the modulus spectra is found to be almost the same as the value obtained from the temperature variation of dc conductivity. The electrical modulus and its scaling behavior are also investigated.