Electrical resistance of amorphous Fe−P,Co−P and Ni−P alloys

The electrical resistances of amorphous Fe–P, Co–P and Ni–P samples were measured as functions of temperatureT between 4 and 300 K in the as-prepared state and after annealing.We found that in the amorphous state the resistances of the iron and cobalt alloys increase proportional toT² whereas the resistances of Ni–P samples vary essentially linearly with temperature. We attributed this result to the differences between the electronic structures of the materials under investigation.Below characteristic temperatures the resistances of all samples increase logarithmically with decreasing temperature. The logarithmic slope depends on composition and thermal treatment and is due to Kondo scattering.