Neutron-Diffraction Observations on the Cu(Fe) Kondo System

Abstract
Polarized-neutron diffraction studies are reported on a series of dilute Cu(Fe) alloys in which the 3d-electron magnetization induced by an applied magnetic field is sensed in the (111) Bragg reflection. Utilizing the concentration dependence, the isolated-Fe-center magnetization is found to be considerably larger than the total magnetization at temperatures below 10 K. The observations lend support to the development of a Kondo spin-compensated singlet state at low temperature.