Electrical characterization of the [N(CH3)4][N(C2H5)4]ZnCl4 compound

Abstract

The [N(CH 3 ) 4 ][N(C 2 H 5 ) 4 ]ZnCl 4 compound has been synthesized by a solution-based chemical method. The X-ray diffraction study at room temperature revealed an orthorhombic system with P2 1 2 1 2 space group. The complex impedance has been investigated in the temperature and frequency ranges 420-520 K and 200 Hz-5 MHz, respectively. The grain interior and grain boundary contribution to the electrical response in the material have been identified. Dielectric data were analyzed using the complex electrical modulus M * for the sample at various temperature. The modulus plots can be characterized by full width at half height or in terms of a non-exponential decay function φ(t)=exp[(−t/τ) β ]. The detailed conductivity study indicated that the electrical conduction in the material is a thermally activated process. The variation of the AC conductivity with frequency at different temperatures obeys the Almond and West universal law.

Synthesis, crystal structures, high-temperatures phase transition, optic and electric properties of hybrid halogenometallates: [(CH3)3N(CH2)2Br]2[MIIBr4] (M = Cu, Zn)

“…One of the most viable approaches is to construct solid-to-solid phase transition materials induced by temperature, of which the structures change from the non-centrosymmetric to centrosymmetric phases. Fortunately, organic-inorganic hybrids have the advantage of adjustability to design and synthesize new phase transition materials with anticipated physical properties such as sensors and NLO responses [16][17][18][19][20]. Due to the advantages of convenient processing, light weight, diverse structures, discrete metal-halides anions and organic cations, the hybrid molecular systems are relatively more interesting [21][22][23][24].…”

Optical and electrical properties and conduction mechanism of [(CH3)2NH2]2CoCl4

“…We can notice that all peaks corresponding to the vibration of the tetrahedral CoCl 4 2− are not observed in this spectrum because they are located at low frequency below 400 cm −1 . All observed peak frequencies in the IR spectrum are listed in Table and assigned as follows . The absorption bands observed at 811, 824, 889 and 1014 cm −1 are assigned to ν s/as (C&bond;N&bond;C) or ρ(NH 2 ).…”

“…All observed peak frequencies in the IR spectrum are listed in Table 1 and assigned as follows. [27][28][29][30] The absorption bands observed at 811, 824, 889 and 1014 cm −1 are assigned to ν s/as (C&bond;N&bond;C) or ρ(NH 2 ). The bands corresponding to the rocking mode ρ(CH 3 ) are observed at 1092 and 1230 cm −1 , the peaks located at 1407 and 1466 cm −1 are assigned to δ s/as (CH 3 ) and the deformation modes of NH 2 group are observed at 1571 and 1630 cm −1 .…”

Electrical and electrochemical properties of Li2M(WO4)2 (M = Ni, Co and Cu) compounds

“…the response of the grain and the inclined line in low frequency region corresponding to the response of the grain boundary and electrode effect. 18,19 The three sample are described by the same equivalent circuit which is modeled by a combination series of two cell, the rst is composed a parallel R and CPE circuits and the second is composed a parallel R, C and CPE elements, where R is resistance (bulk resistance), C is capacitance and CPE is the complex element: constant phase element (capacity of the fractal interface). 20 The CPE element accounts for the observed depression of semicircles and also the non-ideal electrode geometry.…”