Re-evaluation of spin-dependent cross sections of solutes in ferromagnetic hosts

The resistivity data of ferromagnetic alloys has been re-evaluated taking into account that the conduction electrons in 3d ferromagnetics are predominantly polarized d-like electrons with high net polarization. This drastically changes the previously derived values of solute cross sections and scattering rates ratios of the majority and minority electrons. In particular, it removes the perplexing result of previous analyses that the spin-up and spin-down cross sections of sp solute atoms were not equal. Moreover, since past analyses of scattering, transport effects, etc., in 3d ferromagnetics have assumed that the conduction electrons are sp-like, all these results should also be critically re-examined to determine their validity.