Abstract
Pd-M and Pt-M (M: 3d-element) disordered alloys with M concentration of about 10 at% were studied by neutron scattering. Satellite diffuse peaks were observed on the [1 0 0] axis around the 1 0 0 reciprocal lattice point for all the specimens. These satellite reflections are classified into three groups with different type of magnetism; (1) the concentration wave for non-magnetic alloys (PtV, PdV, PtCr), (2) the spin-density wave for spin-glass alloys (PdMn, PtMn, PdCr) and (3) the transverse wave modulation for ferromagnetic alloys (PdFe, PtFe, PdCo). The satellite peak positions depend on the solute element and solute concentration. These oscillatory waves are interpreted as a screening effect in charges or spin polarizations to the impurity potentials in the host metals with special-shaped Fermi surfaces.
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