UV laser-induced transport properties change in silver metaphosphate glass

Samples of AgPO3 were prepared from analar oxides (BDH) using standard sintering ceramic technique. The effect of UV Nd:YAG pulsed laser irradiation with wavelength of 355 nm on the transport properties of the prepared glassy samples AgPO3 was studied. The frequency and temperature dependences of the A.C. conductivity and dielectric properties were analyzed in the temperature range (300 K ≤ T ≤ 393 K) throughout a range of applied frequencies (0.1 kHz ≤ f ≤ 400 kHz). The activation energies were calculated at different temperatures for the unirradiated and irradiated samples. Comparison between the A.C. electrical conductivity, dielectric constant, and dielectric loss, for unirradiated and irradiated samples was performed. The bulk conductivity has been measured with complex impedance method. Cole-Cole diagram has been investigated to obtain the bulk activation energy which corresponds to D.C. conductivity. Results indicate the semiconducting like behavior. At low temperatures and frequencies, random diffusion of the ionic charge carriers via activated hopping gives rise to a frequency independent conductivity characterizing the D.C. conductivity. It was observed that the A.C. and D.C. activation energies have the same order of magnitude.