Abstract
The electrical resistivity of four dilute PtCr alloys containing between 0.05 and 0.3 at.% Cr has been measured between 1.4 and 300K. The incremental resistivity Delta rho (T) for these alloys is assumed to contain two dominant contributions: the first, which decreases monotonically with increasing temperature, is due to magnetic scattering while the second arises from conventional deviations from Matthiessen's rule. With plausible assumptions about the latter, the parameters characterising the magnetic scattering have been estimated from data over a wide temperature range.