The crystal structure of the LiAg2In compound

The newly established intermetallic compound LiAg2In crystallizes in the MnCu2Al-type structure (Fm-3m, Heusler phase) with image. The homogeneity range of this phase in the ternary Li–Ag–In phase diagram along the adjacent quasibinary cut Li0.25(Ag1−xInx)0.75 was determined by X-ray powder diffraction and extends from x∼0.33, Li0.25Ag0.50In0.25, up to x∼0.44, Li0.25Ag0.42In0.33. The homogeneity ranges of Heusler- and Zintl-type phases in the Li–Ag–In system are separated from each other by a broad heterogeneous region.