Ionic Transport in Mechanosynthesized Nanocrystalline LiBaF3

1. Introduction LiBaF 3 single crystals are considered to act as promising window material in the vacuum-ultraviolet wavelength region [1]. LiBaF 3 is the only known ternary fluoride which crystallizes in the cubic inverse perovskite-type structure with the space group 3 Pm m (a = 0.3996 nm) [2, 3]. In this paper we report on a very simple and efficient method to synthesize nanocrystalline LiBaF 3 by high-energy ball milling of LiF and BaF 2. Ionic transport properties of the mechanically prepared sample were investigated by complex impedance spectroscopy. The results are compared with those obtained for microcrystalline LiBaF 3 which was prepared by conventional solid state synthesis.