MAGNETIC COMPTON-SCATTERING FROM HOFE2

The compound HoFe2 has been used to study both the nature and scope of magnetic Compton scattering investigations with circularly polarised synchrotron radiation. It has a large orbital-dominated moment on the holmium site which is antiferromagnetically coupled to the spin-domina ted moment on the iron sites. Studies of the total intensity of the ma gnetic scattering as well as its spectral distribution at the Daresbur y Synchrotron Source and the KEK Accumulation Ring have shown that, in contrast to diffraction studies, Compton scattering is uniquely sensi tive to the spin moment. Detailed analysis of the magnetic Compton pro file has determined the extent to which the individual moments, both s pin and orbital in origin, can be deduced by combining the results wit h magnetisation data.