Abstract
Measurements are presented of the electrical resistivity of several ZnFe alloys with concentrations between 0.04 and 0.05 at % Fe in the temperature interval 0.5–280 K. The low temperature resistivity behavior of even the most dilute alloys is dominated by impurity-impurity interactions leading to fortuitous characteristic temperature ϑ∼90 K. At higher temperatures (T≳15 K) the impurity resistivity is dependent mainly on single impurities with much higher ϑ values. The estimated characteristic temperature of isolated Fe impurities θ1 ∼ 350 K is in better agreement with recent magnetic susceptibility and thermopower measurements.
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