Effect of a third component on ordering of substitutional alloys with anisotropic interatomic interactions

The problem of third-component impurity effects on ordering processes in alloys with anisotropic interatomic interactions is treated in the quasichemical approximation. The case of low-impurity concentration is investigated in detail. It is shown that the presence of a third component leads to an anisotropic redistribution of atom pairs of different types over the various crystal directions even when it interacts isotropically with the main components. The nature of this redistribution depends on alloy composition. The magnetic anisotropy constant of a ternary alloy, induced by thermomagnetic processing, is calculated, and its concentration and temperature dependence are found.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No.7, pp.32–37, July, 1975.