Cluster Self-Organization of Intermetallic Systems: Three-Layer Clusters K159A = 1@16@44@98 and K159B = 1@14@40@104 and Two-Layer Clusters K61 = 1@16@44 and K26 = 0@4@22 in the Crystalline Structure Ta156Al288-cF444

Abstract

Using computer methods (ToposPro software package), the geometric and topological analysis is carried out of the crystal structure of the intermetallic compound Ta156Al288-cF444 (a = 19.153 Å, V = 7026.04 Å3, space group F-43m). A total of 324 variants of the cluster representation of the 3D atomic net with the number of structural units ranging from 2 to 6 are established. Three variants of the self-assembly of the crystal structure from three-layer clusters are considered. K159A = 1@16@44@98 and K159B = 1@14@40@104, and two-layer clusters K61 = 1@16@44 and K26 = 0@4@22. The symmetry and topological code of the processes of the self-assembly of 3D structures from clusters-precursors is reconstructed in the following form: primary chain → layer → framework.