AC Conductivity and Dielectric Relaxation Studies of La0.95Sr0.05GaO2.975 Gallate
La0.95Sr0.05GaO2.975 has been prepared by conventional solid state reaction method. The calcined sample has been isostatically pressed into pellets at a load of 12 kN cm-2 and then sintered at 1400 °C for 12h. The crystalline phase formation and composition has been examined by X-ray diffraction (XRD) method. Dielectric relaxation of the samples has been investigated in the steps of 25 °C in the temperature range 200-600 °C and frequency range of 1-106 Hz. The bulk and grain boundary contribution with frequency has been studied using Nyquist plots. The equivalent circuit model have been drawn which are well fitted with the plots. The activation energy has been found in the range of Ea = 0.95 eV which indicates that the prepared sample is essentially ionic conductor.
B.S.S. Daniel and G.P. Chaudhari
K. Sood et al., "AC Conductivity and Dielectric Relaxation Studies of La0.95Sr0.05GaO2.975 Gallate", Advanced Materials Research, Vol. 585, pp. 205-209, 2012