Decagonal quasicrystals in Al—Ni—Co: generality and particulars

Abstract

Abstract A great number of stable and metastable structures associated with the Al—Ni—Co decagonal phase were observed in a continuous range from binary Al—Co to binary Al—Ni. Two independent basic binary compounds forming the continuous row of the decagonal solid solutions are argued for Al—Ni—Co. The formation of different quasiperiodic and periodic structures in this range is discussed. Our analysis leads to a significant simplification of the description of the decagonal range in the equilibrium Al—Ni—Co phase diagram.