A.C. Conductivity and Dielectric Properties of Agpo3 Glass

DOI : http://dx.doi.org/10.13005/msri/020202

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Electrical and dielectric properties of AgPO3 glass been measured as a function of temperature (300-400K) and frequency (50-1 MHz). The electrical conductivity was studied by using complex impedance technique and a.c. conductivity. From impedance the bulk condictivtiy is found to be an capacitance and resistance in parallel is found for impedance plot for the sample. It was observed that the relaxation time in the sample increases with increasing temperature. A.C conductivity expressed in terms of frequency-dependant conductivity shows a dispersive behavior which can be described by a power law with the exponent s>1 at higher behavior which can be described ny a power law with the expotent s>1 at higher ferqeuncies. A nearly constant behaviur is found at lower frequencies. The interception of the constant part at w=0 is taken at the dc condictivity. The activation energy of the dc conductivity is found to be 0.5eV. The depedence of the dielectric proerties e and e of AgPO3 on frequency and temperature is also discussed.

Ionic conductivity; AgPO3 A.C. Conductivity; Complex impedance; Dieletric properties