Magnetic excitations in amorphous ferromagnets

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Abstract
Neutron scattering techniques have been used to measure the static structure and magnetic excitations in amorphous magnets. Sum rules and computer models are used to discuss the relationship between the static disorder and the shape of the excitation spectrum. Polarized beam measurements of χ''(Q,E) are compared to analytical theories and computer calculations for the magnetic excitations in amorphous ferromagnets.