Improved structural parameters for the defect pyrochlore, K3/2Cr1/2Te3/2O6•0.5H2O, were determined by carrying out a full-profile Rietveld structural analysis of X-ray powder diffraction data. This made it possible to establish that the locations of the atoms in the Fd3m space group were: K (32e), Te/Cr (16d), and O (48f). The unit cell parameter was equal to 1.0039nm. The ionic conductivity was determined by means of complex impedance measurements of pressed pellets. The resultant data suggested that there was an unique contribution from mobile K cations, with an activation energy of 0.7eV.

J.Isasi, M.L.López, M.L.Veiga, E.Ruiz-Hitzky, C.Pico: Journal of Solid State Chemistry, 1995, 116[2], 290-5