Abstract
Preparation and electrical characterization of NASICON-type compound, Li 1.3Ge 1.4Ti 0.3Al 0.3(PO 4) 3, are described. The solid solution is obtained with Ge 4+ → Ti 4+ and Ge 4+ → Al 3+ substitutions in LiGe 2(PO 4) 3. The powder has been fabricated by a solid state reaction and the structural characteristics of it have been studied by X-ray. Ceramic samples have been sintered by varying the sintering duration from 1 to 3 h. Samples were studied by complex impedance spectroscopy in the frequency range 1 MHz–1.2 GHz and temperature range 300–600 K. Two regions of relaxation dispersion were found. The dispersions were related to the fast Li + ion transport in the grains and grain boundaries. Variation of the sintering duration has no considerable effect on electrical properties of the ceramics.
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