Abstract
The resistivity has been measured as a function of temperature for Fe dissolved in Ir, and in some Os-Ir and Ir-Pt alloys. The resistivity due to the Fe has a strong anomalous temperature dependence which scales linearly with Fe concentration and changes gradually with host composition. No discontinuity in the behavior of the resistivity was found at Ir-Fe to correspond to the discontinuity in susceptibility observed by Geballe et al. The anomalous scattering persists in the Os-Ir alloys, where magnetic measurements indicate that no magnetic moment resides on the Fe impurities.