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Title: Alternative current conduction mechanisms of organic-inorganic compound [N(CH{sub 3}){sub 3}H]{sub 2}CuCl{sub 4}

The [N(CH{sub 3}){sub 3}H]{sub 2}CuCl{sub 4} single crystal has been analyzed by X-ray powder diffraction patterns, differential scanning calorimetry (DSC), and electrical impedance spectroscopy. [N(CH{sub 3}){sub 3}H]{sub 2}CuCl{sub 4} crystallizes at room temperature in the monoclinic system with P2{sub 1}/{sub C} space group. Three phase transitions at T{sub 1} = 226 K, T{sub 2} = 264 K, and T{sub 3} = 297 K have been evidenced by DSC measurements. The electrical technique was measured in the 10{sup −1}–10{sup 7} Hz frequency range and 203–313 K temperature intervals. The frequency dependence of alternative current (AC) conductivity is interpreted in terms of Jonscher's law (developed). The AC electrical conduction in [N(CH{sub 3}){sub 3}H]{sub 2}CuCl{sub 4} compound is studied by two processes which can be attributed to a hopping transport mechanism: the correlated barrier hopping model in phases I, II, and III, the non-overlapping small polaron tunneling model in phase IV. The conduction mechanism is interpreted with the help of Elliot's theory, and the Elliot's parameters are found.
Authors:
; ; ;  [1] ;  [2]
  1. Laboratory of Condensed Matter, Faculty of Sciences, University of Sfax, BP1171, 3018 Sfax (Tunisia)
  2. LUNAM Université, Université du Maine, CNRS UMR 6283, Institut des Molécules et Matériaux du Mans (IMMM), Avenue Olivier Messiaen, F-72085 Le Mans Cedex 09 (France)
Publication Date:
OSTI Identifier:
22304306
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CALORIMETRY; CARBON COMPLEXES; CHLORINE COMPOUNDS; COPPER COMPLEXES; CURRENTS; ELECTRIC CONDUCTIVITY; ELECTRIC IMPEDANCE; FREQUENCY DEPENDENCE; HYDROGEN COMPLEXES; INORGANIC COMPOUNDS; MONOCRYSTALS; NITROGEN COMPLEXES; ORGANIC COMPOUNDS; PHASE TRANSFORMATIONS; SPACE GROUPS; SPECTROSCOPY; TEMPERATURE RANGE 0065-0273 K; TEMPERATURE RANGE 0273-0400 K; TUNNEL EFFECT; X-RAY DIFFRACTION