Nondiagonal impedance of amorphous wires with circular magnetic anisotropy

Антонов, А. С.; Iakubov, I. T.; Lagarkov, A. N.

doi:10.1016/s0304-8853(98)00114-0

Cited by 55 publications

(37 citation statements)

References 7 publications

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“…In accordance with Faraday law, the variation of z M induces a voltage V in the pick-up. At low AC current amplitudes the circular field causes a precession of the magnetization vector, and V is proportional to the nondiagonal component of the wire impedance [11]. At higher AC current amplitudes the magnetization reversal process develops, and much higher values of V are induced in the coil.…”

Section: Resultsmentioning

confidence: 99%

Magnetization reversal process and nonlinear magneto-impedance in Cu/NiFe and Nb/NiFe composite wires

Антонов

Buznikov

Granovsky

et al. 2002

Journal of Magnetism and Magnetic Materials

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The magnetization reversal of Cu/NiFe and Nb/NiFe composite wires carrying AC current is studied. The frequency spectrum of a voltage induced in a pick-up coil wound around the wire is analyzed. The frequency spectrum is shown to consist of even harmonics within a wide range of AC current amplitudes and longitudinal DC magnetic fields. The strong dependencies of the harmonic amplitudes on the DC field are found. The results obtained may be of importance for the design of weak magnetic field sensors.

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Section: Resultsmentioning

confidence: 99%

Magnetization reversal process and nonlinear magneto-impedance in Cu/NiFe and Nb/NiFe composite wires

Антонов

Buznikov

Granovsky

et al. 2002

Journal of Magnetism and Magnetic Materials

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“…To explain the experimentally observed hysteresis of MI, we adapted the concept of helical anisotropy in amorphous wires [9,10] . Fig.…”

Section: Resultsmentioning

confidence: 99%

High frequency magneto impedance in amorphous microwires

Ipatov

Zhukova

Zhukov

et al. 2010

J. Phys.: Conf. Ser.

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High frequency magneto impedance in amorphous microwiresToAbstract. We report the novel results on studies of the magneto impedance (MI) effect at GHz-range in 20 µm amorphous glass-coated microwire and 40 µm melt-extracted wire with nearly-zero magnetostriction constant. Both types of wires demonstrated similar behavior although the MI effect is higher in glass-coated microwire. In high field region, when the sample is magnetically saturated, the MI dependence demonstrates typical ferromagnetic resonance behavior. In the low field region the magnetization rotation process is dominant resulting in the highest sensitivity of the impedance to magnetic field. The drawback found in the studied samples is the low field magnetic hysteresis which is undesieble for potential application. The cause of this hysteresis is found to be the helical surface anisotropy in the wires which is characterized by a nonzero angle between the anisotropy easy axis and the wire's transversal plane.

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“…In this case, the solution of equations (2) and (5) can be presented in the following form [11,12]: (2) can be found in the form of series representing even and odd types of solutions with respect to the radial coordinate [11].…”

Section: Modelmentioning

confidence: 99%

A model for exchange-biased asymmetric giant magneto-impedance in amorphous wires

Buznikov¹,

Yoon²,

Kim³

et al. 2006

J. Phys. D: Appl. Phys.

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A model describing the exchange-biased asymmetric giant magneto-impedance in Jouleheated amorphous wires is proposed. It is assumed that the Joule heating results in the formation of a surface hard magnetic crystalline layer, and the asymmetric giant magnetoimpedance is related to the exchange coupling between the amorphous and crystalline phases.The coupling between the surface layer and the amorphous bulk is described in terms of an effective bias field. The model is based on a simultaneous solution of linearizied Maxwell equations and the Landau-Lifshitz equation. The calculated field and frequency dependences of the wire impedance are in a qualitative agreement with results of the experimental study of the asymmetric giant magneto-impedance in Joule-heated Co-based amorphous wires.

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Nondiagonal impedance of amorphous wires with circular magnetic anisotropy

Cited by 55 publications

References 7 publications

Magnetization reversal process and nonlinear magneto-impedance in Cu/NiFe and Nb/NiFe composite wires

Magnetization reversal process and nonlinear magneto-impedance in Cu/NiFe and Nb/NiFe composite wires

High frequency magneto impedance in amorphous microwires

A model for exchange-biased asymmetric giant magneto-impedance in amorphous wires

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