Electrical resistivity minima of Fe-(Ni, Co)-Zr amorphous alloys

The temperature dependence of the electrical resistivity of (Fe 1-x Ni x ) 90 Zr 10 (0<or=x<or=0.8) and (Fe 1-y Co y ) 90 Zr 10 (0<or=y<or=0.2) ternary amorphous alloys has been investigated systematically from 4.2K to the crystallisation temperature. In the concentration ranges x<or=0.2 and y<or=0.05, one resistivity minimum has been observed around the Curie temperature. On the other hand, two resistivity minima at low temperature T min l and at relatively high temperature T min h have been found in the concentration ranges 0.25<or=x<or=0.4 and 0.1