Effect of meander structure and line width on GMI effect in micro-patterned Co-based ribbon

Chen, Lei; Zhou, Yong; Lei, Chong; Zhang, Zhimin; Ding, Wen

doi:10.1088/0022-3727/42/14/145005

Cited by 25 publications

(20 citation statements)

References 22 publications

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“…Compare with the chemical etching method in former research work [13], higher processing precision can be obtained by the ion beam etching method. Photograph of the layered samples is shown in Fig.…”

Section: Methodsmentioning

confidence: 93%

“…Particularly, sensors based on the giant magnetoimpedance (GMI) effect have provided a much better alternative because of its high sensitivity, stability and small size. Much effort has been made to investigate the influence of sample structure, such as multilayer [1][2][3][4][5][6][7][8][9] and meandered structure [10][11][12][13][14] of thin films and ribbons, on GMI effect in soft magnetic material. These results suggest that except for the choosing of different materials (wire, thin film and ribbon) and the optimizing treatment (annealing, doping, etc.)…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Giant magnetoimpedance effect in sputtered single layered NiFe film and meander NiFe/Cu/NiFe film

Chen

Zhou

Lei

et al. 2010

Journal of Magnetism and Magnetic Materials

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Section: Methodsmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Giant magnetoimpedance effect in sputtered single layered NiFe film and meander NiFe/Cu/NiFe film

Chen

Zhou

Lei

et al. 2010

Journal of Magnetism and Magnetic Materials

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“…Such scientific research has dealt with several aspects concerning the intrinsic magnetotransport properties (i.e., frequency range, intensity of the effect, magnetic field to observe possible maximum, noise, etc.) as well as those related with microstructural (mainly amorphous or nanocrystalline) or geometrical character (as it was mentioned, initially in wire, but GMI has been also reported in glass-coated microwire [5,6], ribbon [7], micro-patterned ribbon [8], multilayers [9]) and, therefore, GMI is actually opening a new branch of research combining the micromagnetics of soft magnets with the classical electrodynamics. Recently, the development of high-performance magnetic sensors has benefited from the discovery of this new magnetic phenomenon, giant magnetoimpedance in metal-based amorphous alloys.…”

Section: Introductionmentioning

confidence: 86%

Magnetotransport at High Frequency of Soft Magnetic Amorphous Ribbons

González-Legarreta

Talaat

Ipatov

et al. 2015

Smart Sensors, Measurement and Instrumentation

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Abstract. Magnetic properties of amorphous alloy ribbons have been extensively studied for nearly a quarter of a century since their first production. Much interest in these materials has been stimulated by their remarkable magnetomechanical and magnetotransport properties. It is amazing to notice with respect to the so-called giant magnetoimpedance effect (GMI) effect that the rapid advantages in the understanding of the underlying physical mechanisms of GMI have allowed the development of practical devices and applications using this effect. Therefore, the large influence of magnetic fields and also mechanical stresses in determining the magnetic permeability and electrical impedance of such soft ferromagnetic alloys make these materials very suitable for sensing magnetic field, current and stress. In this chapter we will try to report the recent studies on GMI response of near-zero magnetostriction Co-based amorphous ribbons in as-cast (with different wide dimension) state, and exhibiting a macroscopic uniaxial magnetic anisotropy induced by different stressannealing treatment (300 MPa applied tensile stress at different temperature i.e., 340, 360, and 400 ºC, during 1 h) in the frequency range from 10 MHz up to 1000 MHz. Comparison among GMI effect of as-cast state and stress-annealed ribbons will be discussed. It is remarkable that a more spectacular and defined GMI effect is observed in the stress-annealed ribbons owing to the presence of a macroscopic uniaxial transverse magnetic anisotropy developed with the stressannealing treatment that enhances the transverse component of the magnetic susceptibility.

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“…Because meander-shaped micro-patterned ribbon possesses high GMI ratio compared that of the ribbon with single strip structure [6][7]. Cobalt-based amorphous alloys, e.g., Vitrovac, exhibit a high GMI level, a high sensitivity to an applied magnetic field [8], which makes them promising GMI materials.…”

Section: Introductionmentioning

confidence: 99%

A Study on Giant Magnetoimpedance Effect in VITROVAC 6025Z Micro-patterned Ribbons

2016

Self Cite

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Abstract. In this paper, micro-patterned cobalt-based amorphous ribbons with different structures are fabricated by MEMS technology, including bonding, lithography and electroplating. The commercial amorphous ribbons (VITROVAC 6025Z) are purchased from VACUUMSHMELZE ® company. The structures of micro-patterned ribbons are designed for meander shape for different turns (one turn, two turns and three turns). The effect of external magnetic field orientation and turns on GMI ratios were studied in the frequency range of 1-40 MHz. It is found that GMI ratios almost all present negative value, which is related to the material property, namely a large coercive force. Compared with the GMI ratios obtained at transverse external magnetic field, the maximum negative GMI ratio obtained at longitudinal external magnetic field is higher. The value of -69.93% is obtained at a current frequency of 20 MHz and the magnetic field of 150 Oe. With the increase of the number of turns, the maximum positive GMI ratio increases from 0.5 % for the one turn sample to the 2.8% for the sample with three turns. The maximum nagative GMI ratio is obtained by three-turns sample. The GMI character of VITROVAC 6025Z micro-patterned ribbon is significant and the microsensor is expected to be used in biological sensing field.

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Effect of meander structure and line width on GMI effect in micro-patterned Co-based ribbon

Cited by 25 publications

References 22 publications

Giant magnetoimpedance effect in sputtered single layered NiFe film and meander NiFe/Cu/NiFe film

Giant magnetoimpedance effect in sputtered single layered NiFe film and meander NiFe/Cu/NiFe film

Magnetotransport at High Frequency of Soft Magnetic Amorphous Ribbons

A Study on Giant Magnetoimpedance Effect in VITROVAC 6025Z Micro-patterned Ribbons

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