Abstract
The expected high positive value of the extraordinary Hall coefficient R s in a ferromagnetic alloy was confirmed in the amorphous system Fe 81B 13Si 4C 2. At the same time the increase of R s produced by the thermal structural relaxation was experimentally verified by means of Hall potential measurements in Fe 81B 13Si 4C 2 sheets after isothermal annealing in vacuum at increasing temperatures. Moreover, a direct relaxation between magnetoelasticity and Hall conduction mechanism was demonstrated by means of the effect of a tensile stress σ on the spontaneous Hall coefficient. It was shown that R s has an appreciable increase with σ. By this result one deduces that Hall effect can be useful to measure local axial stresses.
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