This spinel was characterized by using Rietveld X-ray structure refinement, differential thermal analysis, high-temperature X-ray diffraction analysis and electrical conductivity measurements. The new phase had C2/c symmetry; with a = 0.74461, b = 1.01622, c = 1.01721nm, and γ = 132.111º. The structure was of 1:1 ordered type, with the Cr2+ and Li2+ ions occupying octahedral sites. An ordered CrCl6 octahedral elongation, which was caused by the strong cooperative Jahn-Teller effect of the d4 state, led to a lattice deformation from orthorhombic to monoclinic symmetry. The monoclinic phase changed reversibly into the cubic spinel via a 2-phase region at 222 to 305C. The material exhibited an ionic conductivity of 0.063S/cm at 400C.

R.Kanno, Y.Takeda, A.Matsumoto, O.Yamamoto, R.Suyama, S.Kume: Journal of Solid State Chemistry, 1988, 75[1], 41-51