Conduction-electron localized-moment interaction in palladium-silicon base amorphous alloys containing transition metals
The electrical and magnetic properties of amorphous alloys 
obtained by rapid quenching from the liquid state have been studied. 
The composition of these alloys corresponds to the general formula 
M x Pd 80-x Si 20 , in which M stands for a metal of the first transition 
series between chromium and nickel and x is its atomic concentration. 
The concentration ranges within which an amorphous structure could be 
obtained were: from 0 to 7 for Cr, Mn and Fe, from 0 to 11 for Co 
and from 0 to 15 for Ni. A well-defined minimum in the resistivity vs 
temperature curve was observed for all alloys except those containing 
nickel. The alloys for which a resistivity minimum was observed had a 
negative magnetoresistivity approximately proportional to the square 
of the magnetization and their susceptibility obeyed the Curie-Weiss 
law in a wide temperature range. For concentrated Fe and Co alloys 
the resistivity minimum was found to coexist with ferromagnetism. 
These observations lead to the conclusion that the present results 
are due to a s-d exchange interaction. The unusually high resistivity 
minimum temperature observed in the Cr alloys is interpreted as a 
result of a high Kondo temperature and a large s-d exchange integral. 
A low Fermi energy of the amorphous alloys (3.5 eV) is also responsible 
for the anomalies due to the s-d exchange interaction.