%0 Journal Article %T Impedance Measurements Of Some Silver Ferro-phosphate Glasses&nbsp; %J Advanced Materials Letters %I International Association of Advanced Materials %Z 0976-3961 %A Salman, Fathy %A Khalil;Hany Hazaa, Reda %D 2016 %\ 07/01/2016 %V 7 %N 7 %P 593-598 %! Impedance Measurements Of Some Silver Ferro-phosphate Glasses&nbsp; %K impedance %K ac conductivity %K phosphate glasses %K silver iodide %K correlated barrier hopping (CBH) %R 10.5185/amlett.2016.6175 %X Impedance measurements of (50-x)P < sub>2O5-xAgI-40Ag2O-10Fe2O3, [where x = 0, 15, 20, 25, 30, 35, 40 and 45 mol %] superionic glasses have been studied in the frequency range (500 Hz - 5 MHz) and in the temperature range 303-413 K. The frequency dependence of the total conductivity (&sigma;t) for the investigated samples was carried out at different ambient temperatures. The temperature dependence of ac conductivity &sigma;ac(&omega;) and dc conductivity (&sigma;dc) were studied, where Arrhenius behavior has been observed for all the samples glass, and the corresponding activation energies &Delta;Eac and &Delta;Edc, respectively have been obtained. The bulk conductivity (&sigma;b) of the samples has been carried out at different temperatures, from impedance plots, where the activation energy &Delta;Eb can be obtained. From the frequency dependence of the ac conductivity of the investigated samples, &sigma;ac(&omega;)=A&omega;s, the frequency exponent s and the maximum barrier height Wm have been deduced at different compositions. The results are interpreted in terms of the correlated barrier hopping (CBH), Funke, and Minami models. %U https://aml.iaamonline.org/article_14888_c89f1df4d7692f203f5bd3024f3a3d04.pdf