Open Access

ARTICLE

Effect of Rays on the Impedance Spectrum of Solid Solutions of the (TlGaSe₂)_1−x(TlInS₂)_x

A. A. Orujova¹, T. F. Yusibova¹, R. Sh. Agayeva¹, G. A. Ismayilbeyli¹, N. I. Guliyev^2,*
1 Department of Physics and Ecology, Mingachevir State University, Mingachevir, Azerbaijan
2 Department of Physics, Ganja State University, Ganja, Azerbaijan
* Corresponding Author: N. I. Guliyev. Email:

Chalcogenide Letters https://doi.org/10.32604/cl.2026.077900

Received 19 December 2025; Accepted 25 March 2026; Published online 13 April 2026

Abstract

Warburg impedance models the process of diffusion of mobile ions from the electrode to the diffusion layer under a sinusoidal voltage applied at one polarity of an electrochemical cell, and the diffusion of mobile ions to the electrode at the other polarity. As a result, the process does not go beyond the diffusion layer. In this case, the diffusion of Tl⁺¹ ions in the T l I n S 2 crystal (as well as in solid solutions) after 25 Mrad irradiation is considered to be responsible for the formation of the Warburg diffusion impedance. The transition to the superionic state is confirmed by measuring the temperature dependence of electrical conductivity. It was found that the relaxation time decreases after the crystals are exposed to radiation. The complex plane diagrams were analyzed using the equivalent circuit substitution method. It has been shown that the system of solid solutions undergoes a phase transition to the superionic state after γ-irradiation.

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Keywords

Impedance spectroscopy; Warburg impedance; solid solutions; superionic; Tl⁺ ion diffusion conductivity

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