Magnetic anisotropy distribution near the surface of amorphous ribbons

Tsukahara, Sonoko; Satoh, T.; Tsushima, T.

doi:10.1109/tmag.1978.1059797

Cited by 48 publications

(17 citation statements)

References 9 publications

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“…4 shows the behaviour of the magnetic anisotropy energy as a function of T-l for Fe,,Ni,,B,, (specimen A) and Co,,Nil,F5SillB,, (specimen B). I n the case of Fe4,Ni4,B2,, K,ff decreases with decreasing T as also found by Tsukahara [2]. This decrease of Keff is observed for thinning of the thickness from the wheel side as well as from the free surface.…”

Section: -supporting

confidence: 79%

“…The range of interaction between the domain walls and these pinning centres may be quite different. I n the case of the effects 1. to 4. the wavelength of the interaction potential is of the order of magnitude of the domain wall width, 6, (0.3 pm), whereas the surface potential of the domain walls has wavelengths of w 50 pm [2]. Purthermore the interpretation of experimental results is simplified if H , is measured immediately after establishing the remanent state because in this case we may neglect the contribution, H:', of the magnetic after-effects.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

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The influence of the surface conditions on the magnetic properties in amorphous alloys Fe40Ni40B20 and Co58Ni10Fe5Si11B16

Wang

Kronmüller

1982

phys. stat. sol. (a)

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Using electrolytic polishing, the coercive field, Hc, and the magnetic anisotropy, Keff, as a function of the thicknéss is invèstigated. After removing of top and wheel‐side, the surface coercive field decreases. It is shown that the anomaly of the surface coercive field originates from the surface Soyghness and from internal stresses which are induced during the quenching process. For stronger thinning treatments Hc, is found to increase. In magnetostrictive amorphous alloys as Fe40Ni40B20 internal stresses are the source of the magnetic anisotropy, Keff. The surface roughness is found not to induce the surface anomaly of Keff.

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Section: -supporting

confidence: 79%

Section: Theoretical Backgroundmentioning

confidence: 99%

The influence of the surface conditions on the magnetic properties in amorphous alloys Fe40Ni40B20 and Co58Ni10Fe5Si11B16

Wang

Kronmüller

1982

phys. stat. sol. (a)

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“…(b) The non-flat morphology of the ribbon's surface is not considered (Figures 1b and 3a). Irregularities on the surface lead to a dispersion of the anisotropy [52,54], i.e., ψ (see Equations ( 4) and ( 5)) takes on different values at different points of the ribbon's surface. The main observations for the obtained experimental and calculated dependences with an increase in the AC frequency can be summarized as follows:…”

Section: Computer Simulationmentioning

confidence: 99%

Magnetoimpedance of CoFeCrSiB Ribbon-Based Sensitive Element with FeNi Covering: Experiment and Modeling

Volchkov

Pasynkova

Derevyanko

et al. 2021

Sensors

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Soft magnetic materials are widely requested in electronic and biomedical applications. Co-based amorphous ribbons are materials which combine high value of the magnetoimpedance effect (MI), high sensitivity with respect to the applied magnetic field, good corrosion stability in aggressive environments, and reasonably low price. Functional properties of ribbon-based sensitive elements can be modified by deposition of additional magnetic and non-ferromagnetic layers with required conductivity. Such layers can play different roles. In the case of magnetic biosensors for magnetic label detection, they can provide the best conditions for self-assembling processes in biological experiments. In this work, magnetic properties and MI effect were studied for the cases of rapidly quenched Co67Fe3Cr3Si15B12 amorphous ribbons and magnetic Fe20Ni80/Co67Fe3Cr3Si15B12/Fe20Ni80 composites obtained by deposition of Fe20Ni80 1 μm thick films onto both sides of the ribbons by magnetron sputtering technique. Their comparative analysis was used for finite element computer simulations of MI responses with different types of magnetic and conductive coatings. The obtained results can be useful for the design of MI sensor development, including MI biosensors for magnetic label detection.

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Section: Domain Patterns In Amorphous Alloys -mentioning

confidence: 99%

“…By means of the magneto-optical Kerr effect in a series of amorphous alloys the domain structures have been investigated [4][5][6][7][8]. Figure 1 shows a characteristic domain structure of an Fe4oNi4oP 14B6 alloy [8]. Similarly figure 2 represents the domain patterns of an Fe8oB2o alloy as observed on two opposite surfaces of an amorphous ribbon which was produced by the spin-quenching technique [9].…”

Section: Domain Patterns In Amorphous Alloys -mentioning

confidence: 99%