Abstract
Abstract
Neutron diffraction in combination with isotopic substitution on the zero-scatterer 62Ni43
63Cu57 shows indications for chemical short-range order in the stable liquid as evidenced by oscillations in the concentration–concentration structure factor S
CC(q). This points towards a non-ideal solution behavior of Ni–Cu contrary to common believe but in agreement with measurements of free enthalpy of mixing. The temperature dependence of S
CC at small momentum transfer provides evidence of critical compositional fluctuations in Ni43Cu57 melts.
Subject
Condensed Matter Physics,General Materials Science