Kondo effect in dilute alloy films of CuFe deposited at room and helium temperature

The resistivity of Cu, Cu + 100 ppm Fe and Cu + 200 ppm Fe films was measured as a function of temperature from 1 to 300 K. The results on films evaporated at room temperature are compared with contradicting data of other authors. Disordered CuFe alloy films, produced by evaporation onto a substrate at helium temperature, failed to show the theoretically predicted temperature shift of the resistivity minimum.