Analysis of structural, thermal and dielectric properties of LiTi2(PO4)3 ceramic powders

Lithium titanium phosphate (LiTi2(PO4)(3)) ceramic powders have been prepared by a solid state reaction method at five different temperatures (800 degrees C, 900 degrees C, 1000 degrees C, 1100 degrees C and 1200 degrees C for 5 h each). The XRD profiles have shown that the sample sintered at 1100 degrees C (optimized) has displayed well-defined features. XRD peaks are in good agreement with the JCPDS Card No. 35-0754 confirming the rhombohedral structure in a space group of R3c. The SEM images of the five samples sintered have been examined. EDAX and Raman spectra have been obtained for the LiTi2(PO4)(3) ceramic powder sintered at 1100 degrees C for analysis. Thermal properties for the as prepared precursor LiTi2(PO4)(3) sample, have been analyzed from the TG-DTA profiles. Besides this, dielectric constant, dielectric loss and conductivities (sigma(ac) and sigma(dc)) have also been studied for the LiTi2(PO4)(3) ceramic powder. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.