X-Ray and Neutron Scattering Measurements in Mn-Rich γ-MnCu Alloy Single Crystal

Abstract

By means of Mn-rich γ-MnCu alloy single crystal, neutron diffuse scattering around (0 0 1) reciprocal lattice point and magnon scattering were studied. The contributions from three factors, atomic short range order, (0 0 1) elastic magnetic scattering and magnon scattering, are proposed as main origins of diffuse peak observed around (1 0 0) Bragg angle in the powder sample of γ-MnCu alloy. Twin domain formation at the Néel temperature was also studied by X-ray diffraction measurements.