Temperature-dependent part of the resistivity of Al-Cu alloys

Abstract

The electrical resistivity of dilute polycrystalline Al-Cu alloys has been investigated in the temperature range 4.2-360 K. The phonon part of the resistivity at low temperatures varies as ${T}^{n}$ where $3<n<3.6$. The temperature corresponding to the maxima of the deviation from Matthiessen's rule shifts to higher values with the concentration as ${c}^{\frac{1}{5}}$. At high temperatures the deviations have negative slopes.