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Magnetoelastic behavior of glass-covered amorphous ferromagnetic microwire

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6 Author(s)
Gonzalez, J. ; Dept. de Fisica de Mater., Pais Vasco Univ., San Sebastian, Spain ; Murillo, N. ; Larin, V. ; Barandiaran, J.M.
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Particular aspects concerning the magnetoelastic behavior of an Fe-rich glass-covered amorphous ferromagnetic microwire (diameter about 20 μm) are reported in both the as-prepared state and after various heat treatments. The main feature of such behavior is that related with the bistable behavior exhibited by the microwire. The magnetization process takes place by a single and large Barkhausen jump at a given applied field. For the as-prepared material, the value of this switching field (H*≈112 Am-1) is about one order of magnitude larger than that reported for Fe-rich amorphous wires with a diameter of about 125 μm (H*≈8 Am-1). The effect of the thermal treatment as well as the stress dependence of H* for as-obtained and treated microwire are also reported and discussed in terms of the stress distribution within the microwire

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Magnetics, IEEE Transactions on  (Volume:33 ,  Issue: 3 )