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The giant magnetoimpedance effect of the nanocrystalline ribbon Fe_(84)Zr_(2.08)Nb_(1.92)CU_1B_(11) (atom fraction in %) was investigated. There is an optimum annealing temperature (T_A≈998 K) for obtaining the largest GMI (giant magnetoimpedance) effect in the ribbon Fe_(84)Zr_(2.08)Nb_(1.92)Cu_1B_(11). The ribbon with longer ribbon length has stronger GMI effect, which may be connected with the demagnetization effect of samples. The frequency f_(max), where the maximum magnetoimpedance GMI(Z)_(max)=[(Z(H)-Z(0))/Z(0)]_(max) Occurs, is near the intersecting frequency f_i of the curves of GMI(R), GMI(X), and GMI(Z) versus frequency. The magnetoreactance GMI(X) decreases monotonically with increasing frequency, which may be due to the decrease of permeability. In contrast, with the AC (alternating current) frequency increasing, the magnetoresistance GMI(R) increases at first, undergoes a peak, and under then drops. The increase of the magnetoresistance may result from the enhancement of the skin effect w
The giant magnetoimpedance effect of the nanocrystalline ribbon Fe_ (84) Zr_ (2.08) Nb_ (1.92) CU_1B_ (11) (atom fraction in%) was investigated. There is an optimum annealing temperature (T_A≈998 K) (giant magnetoimpedance) effect in the ribbon Fe_ (84) Zr_ (2.08) Nb_ (1.92) Cu_1B_ (11). The ribbon with longer ribbon length has stronger GMI effect, which may be connected with the demagnetization effect of samples. (max), where the maximum magnetoimpedance GMI (Z) _ (max) = [(Z (H) -Z (0)) / Z (0)] _ (max) Occurs, is near the intersecting frequency f_i of the curves of GMI (R), GMI (X), and GMI (Z) versus frequency. The magnetoreactance GMI (X) decreases monotonically with increasing frequency, which may be due to the decrease of permeability. ) frequency increasing, the magnetoresistance GMI (R) increases at first, undergoes a peak, and under then drops. The increase of the magnetoresistance may result from the enhancement o f the skin effect w