Abstract
In as received nearly zeromagnetostriction Co-based Metglas, magnetic properties in low magnetic field are anomalously affected by bending stresses. The behavior of Co-based alloys, in particular 2714A Metglas, is here compared with that of Fe-rich Metglas for which λ s ranges between 10 × 10 -6 and 35 × 10 -6. The specimens here analyzed are in the form of flat ribbons and tape-wound toroids with different radii. In 2714A Metglas, the bending effects on the ac initial permeability are unexpectedly large and depend on the way of winding the ribbons. These results emphasize a significant and different role of the two ribbon sides in determining the magnetomechanical properties of Co-based alloys.
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