SPECTROSCOPIC RESEARCH OF AGED VITRIFIED AND RE-VITRIFIED SELENIUM

Abstract

The temperature-frequency dependences of real (ε') and imaginary (ε'') parts of the complex dielectric constant (ε*) are studied in aged under normal laboratory conditions for several decades glassy and revitrified selenium at frequencies of 10 Hz - 50 kHz in the temperature range from 293 K to 420 K. The most significant difference in the behavior of the dielectric constant in aged and revitrified samples is observed at the crystallization of aged glassy samples. A notable dielectric dispersion was detected in aged samples, which is likely associated with the presence of transition regions between the glassy matrix and the nuclei of crystalline clusters, indicating microheterogeneity in the glass structure