S.R. Lukić-Petrović
University of Novi Sad, Serbia
Title: Electrical conduction mechanism of amorphous As–S–Se chalcogenides with small concentration of Ag
Biography
Biography: S.R. Lukić-Petrović
Abstract
Electrical conduction mechanism of amorphous Ag0.5(As40S30Se30)99.5 chalcogenide alloy prepared by a melt–quenching technique has been investigated using the complex impedance spectroscopy at different temperatures in the frequency range from 100 Hz to 1 MHz. The detailed analysis of impedance spectra by means of an equivalent circuit model revealed the presence of temperature dependent electrical relaxation phenomenon of the non–Debye type as well as negative temperature coefficient of resistance behaviour. The nature of frequency dependence of AC conductivity follows the jonscher's power law, while DC conductivity data follows Arrhenius behaviour with the activation energy of 0.944 eV