期刊
IEEE TRANSACTIONS ON MAGNETICS
卷 38, 期 5, 页码 3096-3098出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMAG.2002.802399
关键词
giant magnetoimpedance (GMI); induced transverse magnetic anisotropy; nanocrystalline wire; stress-current annealing
Stress-current annealing performed on Fe73.5Cu1Nb3Si13.5B9 amorphous wire results in ultra-soft nanocrystalline wire with an additional very homogeneous transverse magnetic anisotropy. The giant magnetoimpedance (GMI) response of this treated wire has been investigated in a range of ac current (I-ac = 0.2 to 20 mA) and frequency (f = 0.01 to 1 MHz). A maximum GMI ratio as high as around 150% is reported. The magnetoelastic behavior and in particular the influence of applied tensile and torsional stresses, has been analyzed in connection with GMI. From the applied stress dependence of the static field H-m at which the maximum impedance is observed, the values of induced anisotropy field (H-ind = 3.46 and 3.14 kA/m) and magnetostriction (lambda(8) = 1.42 and 1.59 x 10(-6)) are determined.
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