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Magnetic softness and giant magnetoimpedance (GMI) effect of Fe-rich microwires has been considerably improved by stress-annealing: we obtained maximum GMI ratio about one order higher than in as-prepared Fe-rich microwire and of the same order as in as-prepared Co-rich microwire. High enough bias current allows drastic increasing of GMI ratio of Fe-rich microwires up to 120% and off-diagonal GMI...
We report on the fabrication, and the magnetic and structural properties of novel glass-coated Ni 50.95 Mn 25.45 Ga 23.6 microwires with a metallic core diameter of 44μm and a total diameter of 82μm prepared by the Taylor–Ulitovsky method. These annealed microwires showed ferromagnetic behaviour with a well-defined easy axis that corresponds to the axis of the wire. X-ray diffraction...
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