We have measured the resistivity of a series of Ni&sngbnd;Cu alloys as a function of temperature between 1.5° and 300°K, and as a function of field from 0 to 50 kG at 4.2°K. Experiments have been completed on nine paramagnetic alloys ranging in composition from 30 to 44 at.% Ni. A minimum occurs at low temperatures1and the depth of the minimum increases with Ni content. At higher temperatures, the slope of the resistivity‐temperature curve decreases with increasing temperature, and in fact, becomes negative for high nickel content. The high‐field magnetoresistance is negative in all cases and is proportional to the concentration of giant polarization clouds2as a function of Ni&sngbnd;Cu composition. These properties may be attributed to the scattering of conduction electrons from polarization clouds acting as large superparamagnetic moments. Results will also be presented for alloys beyond the critical composition for ferromagnetism.