Analysis of structural and thermal properties of Li 2 TiO 3 ceramic powders (original) (raw)

Li 2 TiO 3 ceramic powders have been developed by a solid state reaction method and those have been sintered at four different temperatures (600 8C, 700 8C, 800 8C and 900 8C) towards the optimization of sintering temperature that has been found to be at 800 8C based on the nature of the XRD profiles. The sample sintered at 800 8C has shown a good crystallinity situation from its XRD peaks and the sample is found to be in monoclinic structure which is in accordance with the reported data of JCPDS 33-0831. The SEM images for samples sintered at 600 8C, 700 8C, 800 and 900 8C, EDAX peaks, FTIR profile have been measured for the temperature optimized (800 8C) sample for understanding the structural details of Li 2 TiO 3 ceramic powders. Besides these, dielectric constant, dielectric loss and a.c. conductivities have been measured for the temperature optimized sample. In order to strengthen the observations made in the XRD profiles at four different temperatures, Raman spectra of those four sintered ceramic powders have also been studied. In respect of the thermal properties, only for the as synthesized (precursor) sample, simultaneous measurement of TG-DTA profiles has been carried out for analysis.