Electrical Resistivity of Equiatomic Rare-Earth-Noble-Metal Compounds

The electrical resistivity of twenty CsCl type intermediate phases of Gd, Tb, Dy, Ho, Er, and Tm with Cu, Ag, and Au and of Y and Nd with Ag were measured from 4.2°K to about 250°K. All of the resistivity-temperature curves, except that of YAg, show anomalies at temperatures which are in good agreement with the available antiferromagnetic-paramagnetic transition temperatures obtained by either neutron diffraction studies or magnetic susceptibility measurements. The spin disordering part of the resistivity of the CsCl phases were deduced and any attempt to apply the theory of de Gennes and Friedel which was used by Rocher for pure rare-earth elements, was not successful.