Title :
Magnetoelastic behavior of glass-covered amorphous ferromagnetic microwire
Author :
Gonzalez, Jose ; Murillo, N. ; Larin, V. ; Barandiaran, J.M. ; Vázquez, M. ; Hernando, A.
Author_Institution :
Dept. de Fisica de Mater., Pais Vasco Univ., San Sebastian, Spain
fDate :
5/1/1997 12:00:00 AM
Abstract :
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
Keywords :
Barkhausen effect; amorphous magnetic materials; annealing; boron alloys; cobalt alloys; coercive force; ferromagnetic materials; internal stresses; iron alloys; magnetic hysteresis; magnetic switching; magnetoelastic effects; metallic glasses; silicon alloys; (Fe0.8Co0.2)75Si15B 10 glass; 20 mum; AC hysteresis loop; Barkhausen jump; Curie temperature; Fe-rich glass; FeCoSiB; annealing; as-prepared state; bistable behavior; coercivity; glass-covered amorphous ferromagnetic microwire; heat treatment; magnetic bistability; magnetization process; magnetoelastic behavior; saturation magnetization; stress dependence; stress distribution; switching field; Amorphous magnetic materials; Amorphous materials; Cable insulation; Glass; Iron; Magnetization processes; Magnetostriction; Tensile stress; Thermal stresses; Wire;
Journal_Title :
Magnetics, IEEE Transactions on
