The expected high positive value of the extraordinary Hall coefficient R-s in a ferromagnetic alloy was confirmed in the amorphous system Fe81B13Si4C2. 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 Fe81B13Si4C2 sheets after isothermal annealing in vacuum at increasing temperatures. Moreover, a direct relation between magnetoelasticity and Hall conduction mechanism was demonstrated by means of the effect of a tensile stress sigma on the spontaneous Hall coefficient. It was shown that R-s has an appreciable increase with sigma. By this result one deduces that Hall effect can be useful to measure local axial stresses. (C) 1999 Elsevier Science B.V. All rights reserved.

Correlation between Hall effect, structural relaxation and magnetoelastic coupling in Fe81B13Si4C2 amorphous alloy

LANOTTE, LUCIANO;AUSANIO, GIOVANNI;IANNOTTI, VINCENZO
1999

Abstract

The expected high positive value of the extraordinary Hall coefficient R-s in a ferromagnetic alloy was confirmed in the amorphous system Fe81B13Si4C2. 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 Fe81B13Si4C2 sheets after isothermal annealing in vacuum at increasing temperatures. Moreover, a direct relation between magnetoelasticity and Hall conduction mechanism was demonstrated by means of the effect of a tensile stress sigma on the spontaneous Hall coefficient. It was shown that R-s has an appreciable increase with sigma. By this result one deduces that Hall effect can be useful to measure local axial stresses. (C) 1999 Elsevier Science B.V. All rights reserved.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/454581
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