Magnetic Ordering in Palladium-Iron Alloys

We have studied the temperature dependence of the electrical resistivity of palladium-iron alloys in the composition range 0.5-12 at.% Fe with particular emphasis on the neighborhood of the magnetic-ordering temperature. Values of the critical temperature $T_c$ determined from the temperature of the maximum of $\frac{d\rho }{\mathrm{dT}}$ fall consistently below those obtained from saturation-magnetization measurements. The dependence of $T_c$ on Fe concentration is discussed and correlated with other properties of this system.