Optical Properties of Ag-Based 3d-Transition Metal Alloys I. Virtual Bound States in Ag-Matrix

Abstract

The dielectric constants and the dc resistivities of Ag-rich alloys, AgTi, AgV, AgCr, AgMn, AgFe, AgCo, and AgNi are measured at room temperature and in the range of solute concentration, 0.2 to 15 at%. The samples are prepared by simultaneous deposition method. The dependence of the impurity resistivity on the solute metals is in qualitative agreement with the results for Au- and Cu-matrix. The collision frequency, and the ratio of the density of conduction electrons to the optical effective mass vary with solute metals in the similar way to the impurity resistivity. The distribution of the density of the virtual bound states is given. The result is discussed on the basis of the Anderson model.