On the Thermoelectric Power of Amorphous Ferromagnets

✍ Scribed by R. Richter; F. Goedsche

• Publisher: John Wiley and Sons
• Year: 1984
• Tongue: English
• Weight: 729 KB
• Volume: 123
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/pssb.2221230117

✦ Synopsis

Abstract

The spin‐disorder model is adopted to calculate the electrical resistivity and thermoelectric power of ferromagnetic metallic galsses within the molecular field approximation. The resistivity expression interpolates correctly between the low (T = 0 K) and the high temperature (T ≧ T~C~) results derived previously. Using Mott's formula a magnetic contribution S^m^(T) to the thermopower is calculated which exhibits a nonlinear temperature dependence. Both, sign and curvature of S^m^(T) are correlated with the actual position of 2__k__~F~ in the structure factor. For a combined spin and potential scattering the total thermopower is evaluated according to the Nordheim‐Gorte rule. The results reproduce qualitatively sign and curvature of the thermopower observed experimentally in ferromagnetic metallic glasses.