Abstract

A thermocouple which consists of two parts of a Fe77.5Si7.5B15 wire-an amorphous part and a crystalline part-which is crystallized by passing a DC current through it, supplies a thermoelectromotive force that depends linearly, up to 470 K in the first approximation, on the junction temperature. The amorphous part is electropositive compared to the crystalline part. The value of the thermoelectric power depends on the evolution of the crystallization process which is simultaneously studied by measurements of the magnetic induction and of the electrical resistance. The quantitative determination of the thermo emf is a sensitive method for the study of the crystallization process in ribbon- and wire-shaped amorphous materials.

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