The Li 2Mg x Zn 1- x SiO 4 ( x =0 2-0 8) single phase ion conductor materials were prepared by the sol gel method.The powder samples were characterized by TG DTA﹑ XRD and TEM.Ionic conductivity of the sinter was determined by means of AC impedance technique The experiment showed that the heating temperature was only 800℃ for the samples prepared by the sol gel method with the average particle size of 100nm,and it has successfully reduced by 350℃ compared with the traditional solid reaction method Ionic conductivity of the materials could be improved by the double doped system of Mg。
Nanocrystalline,single-phase undoped In 2O 3 was prepared by a polymer-network synthesis technique with indium nitrate as the starting material;several methods such as X-ray diffractometry (XRD) and transmission electron microscopy (TEM) were employed to obtain detailed information on the crystallography and microstructual appearance of In 2O 3 superfine powders. The influence of the concentration of starting solution,calcination temperature and time on the particle size was also that investigated by means of the XRD patterns. Results indicate that the obtained powders are mostly crystalline single phase with uniform size and also that the size of the products can be controlled under proper condition.
