An intensive study on the AC impedance mechanism of (AgPO3)1-x(Ag2SO4)x ionic glass systems under various conditions. (20th August 2019)

• Record Type: Journal Article
• Authors: Alkhazali, Atif; Etier, Morad; Aljarrah, Mohammad; Alsukker, Akram; Salman, Fathy
• Is Part Of: World journal of engineering. Volume 16:Number 4(2019)
• Page Start: 477
• Page End: 486
• Publication Date: 2019-08-20
• Subjects: Bulk conductivity and relaxation time -- Cole-Cole plot -- Relaxation activation energy; Engineering -- Periodicals; 620
• DOI: 10.1108/WJE-01-2019-0001
• Languages: English
• ISSNs: 1708-5284

Abstract

Abstract : Purpose: The purpose of this study is to investigate the effect of the considerable Ag2 SO4 content on the electrical and dielectric properties of (AgPO3 )1−x (Ag2 SO4 )x ion glass system as well as to extract thermodynamic parameters. Design/methodology/approach: Glass samples of (AgPO3 )1-x (Ag2 SO4 )x with different mole ratios of Ag2 SO4 [x = 0.00, 0.10, 0.15, 0.20 and 0.25] have been synthesized and used. X-ray diffraction and differential thermal analysis were used to investigate structural and thermal properties, and then the electrical characterizations of the bulk glasses were performed in different frequency and temperature range. Findings: For different ratios of Ag2 SO4 on AgPO3, the bulk conductivity is enhanced with increasing the amount of Ag2 SO4 until the composition of x = 0.20, after which the conductivity decreases. The general behavior of both ε' and ε" decreases with increasing frequency and increases with increasing temperature. Complex impedance analysis studied by Z'−Z' and Cole–Cole plot at different temperatures revealed that bulk resistance decreases with temperature. Originality/value: The calculated values of activation free energy, enthalpy and entropy change for different compositions of (AgPO3 )1-x (Ag2 SO4 )x showed an increase in activation energy and enthalpy when Ag2 SO4 ratio is increased in (AgPO3 )1-x (Ag2 SO4 )x composition up to 20%, and then there is a decrease in their values at x = 25%, which may be explained based on non-bridging oxygen.