The simplest successful approximation scheme for the calculation of scattering due to nonmagnetic impurities in metals, due to Blatt, has been applied to the cases of impurities in the polyvalent hosts Be, Mg, Zn, Cd, Al, In, Sn, and Pb, extending our previous work which was restricted to zinc. The results of this extended study are compared with available residual-resistivity data and, in the case of Cd, with some new experimental data. A new well-marked regularity has emerged from this extended study. If Z and Z₀ denote the Periodic Table column numbers of impurity and host, respectively, it is found that for Z<Z₀ the model works very well, while for Z>Z₀ very little agreement with experiment is obtained. An interpretation of this behavior is proposed which offers a physical understanding of the a priori unexpected validity of the simple model for impurity scattering in metals.
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Tripp et al. (1973) studied this question.
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