News

[08.02.2023]

The next scientific seminar was held at the Institute of Radiation Problems

The next scientific seminar was held at the Institute of Radiation Problems of the Ministry of Science and Education of the Republic of Azerbaijan.

At the seminar, the General Director of the Institute, the corresponding member of ANAS, Professor Islam Mustafayev spoke about the importance of the seminar and said that such events will be held regularly.

Later, Samira Kahramanova, PhD student of the Institute and employee of the "Radiation Physics of Magnetoelectrics" laboratory, delivered a report entitled "Study of electrical instability of TlS and TlSe crystals exposed to gamma radiation".

The report noted that the interest in ion-conducting materials had increased due to the successful application of devices using lithium-ion batteries used in electronics, energy and industry in recent years. Since the operation of these devices was based on electrochemical processes occurring at the electrode-ion conductor interface and the crystal electrolyte itself, it was necessary to study the properties of ion transport in these systems.

One of the most informative methods for studying electrochemical and electrophysical processes in ion-conducting materials was impedance spectroscopy, which was used as an informative work tool in various fields of electrochemistry, physics, and materials science. There was a need for a detailed study of the behavior of semiconductor materials during interaction with radiation in the penetrating radiation fields of semiconductor electronic devices (satellites, operating reactors, etc.).

In the seminar, the research results of the characteristics of hopping conductivity in TlS and TlSe crystals, Paul-Frenkel effect and superion conductivity were presented.

During the presentation, it was concluded that the conductivity of TlS and TlS crystals had a hopping character in the temperature range of 100-300K. Also, the Pull-Frenkel mechanism in that temperature range was given, as well as the mechanism of superionic conductivity was explained by the method of impedance spectroscopy at temperatures above room temperature in radiated and non-radiated samples.