Statistical theory of superlattices with unequal concentrations of the components

摘要: Recently, Bragg and Williams have given an explanation of the variation degree order in alloy with temperature. According to this it is essential consider ordering as a co-operative phenomenon characteristic for large assemblies atoms. The force, V, tending produce order, is, according view, function because remove atom from “right” “wrong” position one requires more energy greater number atoms neighbourhood, i. e. , order. One thus led two functions: V ( s ), describing dependence force on (V), produced by at If both these functions are known, they implicitly define