Abstract

A series of glass samples, according to the formula (100 − x) (0.5Li2O − 0.2Ga2O3 − 0.3P2O5) + xSeO2 (x = 0, 2, 4, 6, 8, 10) and 12 mol.%, labeled as LGPS x (x is the mole percent of SeO2), were synthesized through melt quenching technique. All the LGPS x samples were irradiated by a high energy proton (H+) beam of 3 MeV at fluence of 1014, 5 × 1014, and 10 × 1014 ions/cm2. FTIR and Raman spectra indicated that SeO2 acts either as a glass modifier (SeO 3 2− ) or a glass former (SeO 4 2− ), as the dose rate of beam fluence changes. The bulk conductivity of the highest conducting sample LGPS10 irradiated at a beam fluence of 5 × 1014 ions/cm2 was determined as 5.87 × 10−04 S/cm at 303 K. The super curve in the normalized spectra of electrical modulus at different temperatures confirms that the LGPS samples follow the temperature-independent, frequency-dependent relaxation time before and after irradiation.

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