Andrei Viktorovich Gaponov-Grekhov (on his seventieth birthday)

Abstract

Two Cu-17 at.% Mn single crystals quenched to room temperature after aging at 483 and 553 K, respectively, were investigated by small-angle neutron scattering between room temperature and 15 K. While nuclear small-angle scattering is low and increases only slightly towards the direct beam, strong magnetic small-angle scattering is observed. Its intensity increases with increasing degree of chemical short-range order and decreasing temperature. The correlation lengths for chemical and (static) ferromagnetic fluctuations are comparable. § Present address: