Abstract
Intermetallic Mg alloys are of interest in the development of light materials with specific properties andsome of them are crystalline approximants of quasicrystalline materials. Mg32Al12Zn37 single crystalstructure, cubic, Im3, a = 14.1845(1) Å, is disordered and belongs to the well known 1/1 approximantstructural type commonly called Mg32(Al1-xZnx)49 or T-phase. In this family, Mg32Al12Zn37 is a newmember remarkable for its very special composition nearby intersection of the 2/1 and 1/1 lines thatmark composition domains of cubic 2/1 and 1/1 approximants. Structural features are discussedcomparatively with literature data to emphasize the great adaptability through atom disorder of the 1/1structure.