Temperature dependence of the electrical resistivity of FCC iron alloys

Abstract

FCC iron alloys reveal anomalies in the temperature dependence of the electrical resistivity occurring in the paramagnetic as well as in the magnetically ordered state. The anomalies based on thermally excited electron transitions can be described in the paramagnetic temperature range by a two-level model already used in preceding papers (1977, 1978). A splitting of the degenerate energy levels caused by the magnetic coupling modifies the two-level model so that it is also capable of describing the anomalies occurring in the magnetically ordered state.