Abstract
UDC 541.64:539.26:537.529
DOI https://doi.org/10.52577/eom.2025.61.5.74
The influence of gamma radiation of the Cobalt-60 radioactive source doses on the dielectric constant (ε'), dielectric loss (tan δ) and AC conductivity (σac) properties was studied for the unirradiated and irradiated HDPE/α-Fe3O4 nanocompozites at different concentrations of α-Fe3O4 in the nanocomposites. The ε' and tan δ values were determined via dielectric spectroscopy over a frequency range 25Hz – 1MHz for both irradiated and unirradiated samples at room temperature 25 °C. Further, it was observed that the frequency dependent ε', tan δ, and σac conductivity were found to increase with increasing the dose for all nanocomposites. The frequency and dose dependent ε', tan δ, and σac values of those materials confirmed their suitability as flexible-type nanodielectric materials for their use as insulator and substrate in design of microelectronics devices. Using a PANalytical EMPYREAN X-ray diffractometer and a JEOL JSM-6490LV scanning electron microscope, the crystal structure and surface morphology of unirradiated and irradiated films were studied.
Keywords: polymer, dipole, electron, dielectric constant, tangent of the dielectric loss angle, relaxation, conductivity, frequency, qamma radiation, dose.