Abstract
We present a study of the evolution of the crystallization process from the amorphous through the nanocrystalline to the crystalline state by measuring the temperature dependence of the thermoelectromotive force supplied by three thermocouples of compositions Fe 73.5Cu 1Nb 3Si 13.5B 9, Fe 90Hf 7B 3 and Fe 90Zr 7B 3. The measurements were performed on amorphous ribbons, one portion of the sample being crystallized by the Joule effect, during the evolution of the crystallization process. A comparative study of the evolution of the thermoelectromotive force for the three alloys is also presented. The thermoelectric measurements indicate an increase in the value of the thermoelectromotive force for all studied alloys and a change in the sign of the Fe-Hf-B and Fe-Zr-B thermoelectromotive force.
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