Current sensor application of asymmetric giant magnetoimpedance in amorphous materials

Rheem, Youngwoo; Kim, C.G; Kim, C.O; Yoon, Seok Soo

doi:10.1016/s0924-4247(03)00096-7

Cited by 36 publications

(20 citation statements)

References 7 publications

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“…The super paramagnetic behavior is documented by the hysteresis loop measured at 300K as shown in figure 4 15 Si 12 material to make sensing element coil (SEC). For both samples, the GMI ratio decreased sharply with higher frequencies from 2 MHz to 6 MHZ [11][12][13][14]. This can be understood by considering the corresponding contributions to the impedance from the reactance at low frequency range and the resistance at high frequency range and considering the dependence of the impedance on transverse permeability via the skin effect.…”

Section: Resultsmentioning

confidence: 99%

Magnetic Property and GMI Effect of MFe2O4 Nanoparticles

Lam¹,

Devkota²,

Srikanth³

et al. 2017

MaP

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Section: Resultsmentioning

confidence: 99%

Magnetic Property and GMI Effect of MFe2O4 Nanoparticles

Lam¹,

Devkota²,

Srikanth³

et al. 2017

MaP

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“…3,6 Owing to the presence of a transversely oriented domain configuration that results in a high transverse permeability, the GMI effects have been reported in a large class of rapidly quenched Co-rich amorphous ribbons. [8][9][10] The excellent GMI responses make them one of the best candidate materials for use in magnetic field sensors, 11,12 and these ribbons were being extensively used for the design of novel biosensing probes for highly sensitive detection of cancer cells and biomolecules. [13][14][15] Amorphous alloys are generally quasi-brittle materials since they do not have sufficient intrinsic micro-mechanisms to ease the high stress concentration that appears at the crack tip.…”

Section: Introductionmentioning

confidence: 99%

Anisotropic Mechanical and Giant Magneto-Impedance Properties of Cobalt-Rich Amorphous Ribbons

Tran

Devkota

Eggers

et al. 2016

Journal of Elec Materi

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A comparative study was performed on the mechanical and giant magnetoimpedance (GMI) properties in the longitudinal and transverse directions of Co 69 Fe 4 Ni 1 Mo 2 B 12 Si 12 amorphous ribbons. Both mechanical and GMI properties were found to be anisotropic. Kerr microscopy shows the presence of a stripe-type domain structure with the magnetic easy axis parallel to the longitudinal direction. The fracture strength, elastic modulus, and fracture toughness in the transverse direction was higher than those in the longitudinal direction. A larger GMI response was achieved in the transverse direction at a frequency range where both the domain wall motion and spin rotation dominantly contributed to the effective permeability and hence the magnetoimpedance. The current study paves the way for designing Co-rich amorphous ribbons as desirable components in electronics such as magnetic sensors.

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“…For example, Refs. [3,4] suggested field-annealing Co-based amorphous ribbon at temperature T A = 380 • C, near its crystallization temperature T X , for 8 h in open air. The objective is that after their field-annealing treatments a surface crystallization and/or oxidation layer could be formed on the ribbon.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, as shown below, the RFA method does not require high T A , and the sample is not crystallized, or even embrittled [5]. As a result, besides the advantage of achieving a reasonably high sensitivity, the Co-based ribbon is still ductile after RFA, and can be operated under a bent (or twisted) condition [4,5].…”

Section: Introductionmentioning

confidence: 99%