ISSN

0974-4150 (Online)
0974-4169 (Print)


Author(s): Noorussaba, Afaq Ahmad

Email(s): afaqahmad21@gmail.com , sabaamu@gmail.com

DOI: 10.5958/0974-4150.2015.00024.3   

Address: Noorussaba and Afaq Ahmad*
Solid State Chemistry Lab, Department of Chemistry Aligarh Muslim University, Aligarh- 202002, India
*Corresponding Author

Published In:   Volume - 8,      Issue - 2,     Year - 2015


ABSTRACT:
An efforts were made to prepare some fast ionic solids in the mixed system [0.7(Cu2CdI4):0.3(AgIx:CuI(1-x))] where x = 0.2, 0.4, 0.6 and 0.8 mol. wt. % respectively by solid state reaction of the appropriate solid mixtures and quenching them at particular temperature. Powdered samples of different compositions containing x mol. wt. % of (AgIx:CuI(1-x)) were synthesized by solid state reactions, using [Cu2CdI4] ternary halides as host. Powder specimens of these compositions were analyzed using differential thermal analysis (DTA), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), Fourier transmission infrared spectra (FTIR) and x-ray powder diffraction (XRD) techniques. These studies have confirmed the formation of new products as revealed by the absence of diffraction peaks of parent materials in the XRD patterns. Among the various compositions, a significant number of peaks found to contain Ag+ and Cu+ in Cu2CdI4 respectively and DSC traces have indicated the characteristic ß-a phase transition temperature of [0.7(Cu2CdI4):0.3(AgIx:CuI(1-x))] at around 611K, 635K, 631K and 436K in x = 0.2, 0.4, 0.6 and 0.8 respectively. These changes due to crystalline defects or on increased Cu+-free volume in the tetragonal lattice. In addition, Ag and Cu substitution appears to stabilize the high-temperature, hexagonal structure to temperature well in excess of 523K, associated correspondingly with the melting of the (Ag+:Cu+) sublattice and with the storage of iodide /or cadmium sublattices. Fourier transmission infrared spectra of all the the fast ionic conductors [0.7(Cu2CdI4):0.3(AgIx:CuI(1-x))] (where x = 0.2, 0.4, 0.6 and 0.8 mol. wt. %) in the wavenumber range extending from 400 to 4000 cm-1 are also reported. FTIR measurements can provide information on the motion and environment of the ions.


Cite this article:
Noorussaba, Afaq Ahmad. Synthesis, Infrared spectroscopic and Thermal studies of [0.7(Cu2CdI4):0.3(AgIx:CuI(1-x))] of fast-ion conductor (x = 0.2, 0.4, 0.6 and 0.8 mol. wt. %). Asian J. Research Chem 8(2): February 2015; Page 131-140. doi: 10.5958/0974-4150.2015.00024.3


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DOI: 10.5958/0974-4150 

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