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Monoclinic Li2TiO3 Nano-particles via sol-gel method: Structure and impedance spectroscopy

Fatima Zahra Krimech, Salaheddine Sayouri, Taj-Edine Lamcharfi, Fatima Zahra Ahjyaje

Abstract


Pure phase Li2TiO3 nano-particles were synthesized by the sol-gel method and the structural properties were examined with X-ray diffraction (XRD) technique. The latter showed that these materials, heat treated at relatively low temperature 900°C during 4h compared to the conventional solid-state reaction which calcination temperature is about 900–1100°C for 10 h; crystallize in the monoclinic phase without the presence of secondary phases. The microstructure of the LT ceramic (sintered at 1100°C) were determined by SEM and a good crystalline nature was observed with an average of granular size 2 μm. Moreover, the impedance spectroscopy showed at a higher temperature of 500°C the low-frequency arc due either to the grain boundary or sample-electrode charge transport processes.


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