PHONON AND ELECTRON-DENSITIES OF STATES IN AMORPHOUS FE90-XCOXZR10 ALLOYS

The generalized phonon density of states (PDOS) and the valence electr on density of states (EDOS) of the amorphous Fe-90-x CoxZr10 (2=4, 10 and 40) alloys were measured at the room temperature by inelastic neut ron-scattering and x-ray photoemission spectroscopy, respectively. Pre liminary results show that the stronger the Invar effect, the softer i s the PDOS in the low-energy region and the larger is the EDOS at the Fermi energy level. The enhancement of electron-phonon interaction was suggested to explain the low-energy phonon softening observed in Inva r alloys.