Impact of ribbon width on magnetoimpedance and permeability of Fe69.2Co7.7Cu0.6Nb2.5Si11B9soft magnetic alloy

Ding, Yong; Tian, Ruonan; Ke-min, Xue; Wang, X.; Shi, Yaolin; Ma, Xu

doi:10.1179/1753555715y.0000000060

Cited by 2 publications

(3 citation statements)

References 22 publications

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“…A larger GMI effect is achieved for the magnetic ribbons with larger transverse permeability l T and a smaller electrical resistance R dc . Figure 6 shows the aspect ratio dependence of longitudinal permeability from rotational T has the same dependence on the aspect ratio as the longitudinal permeability derived from rotational magnetization l rot L [15]. In other words, l dw T is proportional to l rot L .…”

Section: Resultsmentioning

confidence: 69%

“…Depending on the working frequency f and the permeability l, the GMI ratio is modified. According to some general approximation, in the case of a strong skin effect, a relation Z µ (lf) 1/2 holds [15,22], where effective permeability contains the contributions from domain wall and magnetization rotation, l = l dw ? l rot .…”

Section: Resultsmentioning

confidence: 99%

“…Some works discovered that the GMI effect increases with increasing length of the sample [8,9,14], while there are still some research reports that identified that the decrease of the sample length resulted in a strong increase of the GMI effect [6]. Our previous studies showed that in as-quenched state and annealed at temperature lower than 773 K, Fe 69.2 Co 7.7 Cu 0.6 Nb 2.5 Si 11 B 9 ribbons with width of 4.4 mm exhibit larger GMI ratio than the ribbons with width of 8.0 mm [15]. Conflicting conclusions were also found in the research about impact of ribbon width on GMI effect [13].…”

Section: Introductionmentioning

confidence: 94%

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Influence of Aspect Ratio on Giant Magnetoimpedance Effect for Fe67Co18Si11B4 Amorphous Ribbons

Ding

Ke-min

Wang

et al. 2017

Acta Metall. Sin. (Engl. Lett.)

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The effect of sample geometry aspect ratio (l/w) on the giant magnetoimpedance (GMI) in Fe 67 Co 18 Si 11 B 4 amorphous ribbons was investigated systematically. The GMI profiles were measured as a function of the external magnetic field at different frequencies up to 110 MHz. The results show that there exists a critical aspect ratio ((l/w) 0 = 5.4) below which the maximum GMI effect and sensitivity g decrease with decreasing l/w and above which the maximum GMI effect keeps almost constant and g decreases with increasing l/w. The observed dependence on aspect ratio as (l/w) \ (l/w) 0 is correlated with the magnetization process: Complex domain structures emerged near the ribbon ends to decrease the magnetostatic energy, modify the transverse permeability and consequently GMI response. Contributions from transverse permeability and resistance may dominantly determine the change of GMI effect as (l/w) [ (l/w) 0 .

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Section: Resultsmentioning

confidence: 69%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

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Influence of Aspect Ratio on Giant Magnetoimpedance Effect for Fe67Co18Si11B4 Amorphous Ribbons

Ding

Ke-min

Wang

et al. 2017

Acta Metall. Sin. (Engl. Lett.)

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Influence of geometry on the giant magnetoimpedance of high-aspect ratio amorphous magnetic ribbons

Pan

Moorehead

Hayward

2020

Journal of Applied Physics

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We study the influence of ribbon geometry on the giant magnetoimpedance behaviour of both low-and high-aspect ratio (length (l) /width (w) = 2 to 150) ribbons made from commercially available amorphous magnetic materials. Our results indicate that the GMI with geometry is due to the combination of edge effects (due to damage created by the ribbon cutting process) and global shape anisotropy. In highaspect ratio ribbons (length (l) /width (w) 20) we find that the GMI decreases with width, which we suggest is due to the cutting process creating induced stresses that suppresses the transverse susceptibility at the edge of the material. In lower aspect ratio ribbons (length (l) /width (w) 20), shape anisotropy results in a relatively rapid increase in GMI with increasing length. We conclude that, with suitable optimisation, high-aspect ratio ribbons prepared from commercially available materials are suitable for use as macro-scale sensors that detect small magnetic fields/strains over a large sensing area.

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Impact of ribbon width on magnetoimpedance and permeability of Fe_69.2Co_7.7Cu_0.6Nb_2.5Si₁₁B₉soft magnetic alloy

Cited by 2 publications

References 22 publications

Influence of Aspect Ratio on Giant Magnetoimpedance Effect for Fe67Co18Si11B4 Amorphous Ribbons

Influence of Aspect Ratio on Giant Magnetoimpedance Effect for Fe67Co18Si11B4 Amorphous Ribbons

Influence of geometry on the giant magnetoimpedance of high-aspect ratio amorphous magnetic ribbons

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