Electron Transport Properties of Amorphous Alloys

Emphasis was laid on the need for classifying metallic glasses into five groups in terms of their magnetic states: 1) ferromagnetism with Tc ≫ 300K, 2) weak ferromagnetism, 3) spin glass or Kondo states, 4) temperature-independent strong paramagnetism, and 5) temperature-independent weak para-or diamagnetism. The temperature dependence of the electrical resistivity in the range 10 to 300K was discussed for the respective group alloys. Only the data for group 5) metallic glasses can be consistently interpreted on the basis of the generalized Faber-Ziman theory. Nevertheless, it was shown that the 2kF/Kp=l.0 criterion is not sufficient to predict a negative TCR even in group 5) alloys.