The order–disorder transition in supersaturated Zr100−xAlx studied by inelastic neutron scattering

Abstract We have studied the influence of supersaturating Zr by Al on the atomic dynamics of the supersaturated solid solution using inelastic neutron scattering before and after the order–disorder transition. The samples ( x =5, 10 and 20 at.%) were characterized by X-ray diffraction and differential scanning calorimetry (DSC). From the neutron scattering data the generalized vibrational density of states (GVDOS), and the dynamic structure factors were determined in all cases. We find a small but distinct weakening of the lower energy (transverse) modes on supersaturation.