Year: 2023
Type: article
Abstract: In the presented work, comparative studies of the dielectric and electrical properties of La0.73Ba0.27MnO3 compounds were carried out at the temperature range T = 25-225 °C and frequencies range f = 20-106 Hz. Temperature and frequency dependences of the real and imaginary parts of the dielectric constant, dielectric loss angle, dielectric constant, and electrical conductivity were obtained. This compound was found to have semiconducting properties under normal conditions. It has been established that with increasing temperature and frequency, the electrical conductivity in these compounds increases. This effect is explained by the release of charge carriers at deep levels due to thermal energy. At a temperature T = 140 °C, a semiconductor-metal phase transition was detected in this compound. The values of physical parameters for each of the semiconductor and metal phases are determined. The occurrence of a phase transition is explained by the mechanism of activation of charge carriers due to thermal energy. Keywords: perovskit; dielectric properties; electrical properties; La1-xBaxMnO3.
Authors: S. H. Jabarov, A. Kh. Nabiyeva, A. V. Trukhanov, S. V. Trukhanov, H. J. Huseynov, Y. I. Aliyev
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4404363101