Thermoelectric and electrical resistivity study of Hitperm alloys

Electron transport properties of amorphous alloys Fe_44.6Co_43.4X_7.3B_3.7Cu₁ (X = NbZr, Zr, HfZr, Hf) are studied by thermoelectric and electrical resistivity measurements. Thermoelectric power is dominated by the electron–magnon scattering whereas the magnetic component of electrical resistivity does not exceed 10%. The measured temperature dependencies of thermopower and resitivity are satisfactorily fitted to the Herzer and Richter models. For the Nb containing alloys the stronger electron localization and lower thermal stability are observed.