Abstract
Several physical properties of quenched Fe78Si10B12 amorphous alloy, such as electrical resistivity, Curie temperature, maximum permeability, and coercive force, have been measured before and after annealing at different temperatures for one hour. The results show that with different annealing temperatures the properties of these specimens change in different ways. The annealing temperatures below ∼380 °C may make the alloy more stable and better qualities, while the annealing temperatures above ∼380 °C make the alloy more unstable and degrade the qualities compared with the as‐quenched state. The possible mechanism of the different changes have been discussed and two kinds of structural relaxation have been suggested.

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