Diffraction effects in X-ray diffraction patterns of the equiatomic alloy CuAu preceding the formation of tetragonality-induced doublets during the crystal-lattice rearrangement in the course of low-temperature ordering

Abstract

A spatial scheme is suggested which makes it possible to explain diffraction effects observed at the incomplete stage of ordering in angular ranges corresponding to a tetragonality-induced splitting of fundamental X-ray diffraction lines (200) and (220) of the parent cubic phase.