Ion Dynamic Studies Through AC Conductivity Spectra On Pb(NO_3)2:Al_203 Composite Solid Electrolytes

摘要

Solid electrolytes with a matrix of Pb(NO_3)2 as host and Al_2O_3 (0.3μm) as dispersoid is prepared by conventional milling mechanism. Structural and morphological studies were carried out through XRD and SEM respectively which confirm that these composites are two phase systems. AC conductivity studies were performed by employing impedance measurement technique between the temperatures 30 and 300°C and in the frequency range 100Hz to 5MHz. Non-overlapping small polaron tunneling mechanism (NSPT) model suggested for ion hopping in the conduction processes.