Study on the Effect of Gamma Radiation on Some Spectroscopic and Electrical Properties of Lithium Borate Glasses

Five undoped and transition metal doped lithium borate glasses, were prepared by melting annealing method at low temperature range (650-750 A degrees C). X-ray diffractograms confirm the amorphous natures of the prepared glasses. Some of their properties such as density, Infrared absorption spectra (FTIR) and electrical conductivity have been studied before and after being subjected to gamma radiation. Optical UV absorbance and calculations of optical energy gap have been also studied on some selected glasses. The variation in density, electrical and spectroscopic parameters was discussed in terms of both valence state and ionic radius of each doped transition metal modifier. FTIR studies demonstrate that these glasses consist of BO3 and BO4 constructing groups with an obvious increase in their IR band intensities after irradiation with 20 kGy. The electrical properties of glasses were studied under the effect of both gamma radiation and temperature range from 298 to 473 K. A significant variation in electrical conductivity values was obvious when the temperature exceeds 413 K in the dose range from 5 to 20 kGy of gamma radiation.