Structure of the cubic intercalate MgxTiS2
Abstract
The structures of the intercalates MgxTiS2–c(0 < x < 0.25), prepared by chemical means, have been refined using high-resolution X-ray powder diffraction. The solid-solution adopts a structure derived from that of a spinel, with space group Fd3m. Magnesium exclusively occupies the octahedral 16c sites within the cubic close-packed sulfide array rather than the tetrahedral 8a sites, as would occur in a normal spinel. A linear increase of the cubic lattice parameter, a, and occupancy of the 16c site versus x is shown.