Magnetostriction investigation of soft magnetic microwires

Churyukanova, M.; Semenkova, V.; Kaloshkin, S.D.; Shuvaeva, E.; Гудошников, С.А.; Zhukova, V.; Щетинин, И. В.; Zhukov, А.

doi:10.1002/pssa.201532552

Cited by 61 publications

(61 citation statements)

References 24 publications

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“…Furthermore, the magnetostriction coefficient, λ s , of the studied microwire, estimated using the SAMR method adapted for microwire research, as described elsewhere [31,54], gives a value of about λ s ≈ −0.3 × 10 −6 .…”

Section: Experimental Methodsmentioning

confidence: 99%

Optimization of magnetic properties and GMI effect of Thin Co-rich Microwires for GMI Microsensors

González-Legarreta

Corte-León

Zhukova

et al. 2020

Sensors

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Magnetic microwires can present excellent soft magnetic properties and a giant magnetoimpedance effect. In this paper, we present our last results on the effect of postprocessing allowing optimization of the magnetoimpedance effect in Co-rich microwires suitable for magnetic microsensor applications. Giant magnetoimpedance effect improvement was achieved either by annealing or stress-annealing. Annealed Co-rich presents rectangular hysteresis loops. However, an improvement in magnetoimpedance ratio is observed at fairly high annealing temperatures over a wide frequency range. Application of stress during annealing at moderate values of annealing temperatures and stress allows for a remarkable decrease in coercivity and increase in squareness ratio and further giant magnetoimpedance effect improvement. Stress-annealing, carried out at sufficiently high temperatures and/or stress allowed induction of transverse magnetic anisotropy, as well as magnetoimpedance effect improvement. Enhanced magnetoimpedance ratio values for annealed and stress-annealed samples and frequency dependence of the magnetoimpedance are discussed in terms of the radial distribution of the magnetic anisotropy. Accordingly, we demonstrated that the giant magnetoimpedance effect of Co-rich microwires can be tailored by controlling the magnetic anisotropy of Co-rich microwires, using appropriate thermal treatment.

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Section: Experimental Methodsmentioning

confidence: 99%

Optimization of magnetic properties and GMI effect of Thin Co-rich Microwires for GMI Microsensors

González-Legarreta

Corte-León

Zhukova

et al. 2020

Sensors

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show abstract

“…The magnetostriction coefficient, λs, of the studied microwire, was evaluated by the SAMR method recently adapted for microwire [54,55]. In this method λs -values are determined in the microwire saturated by an axial magnetic field, H. Simultaneously, low AC transverse field, Hc, generated by an AC electric current flowing along the microwire allows a reversible magnetization rotation.…”

Section: Experimental Methods and Materialsmentioning

confidence: 99%

“…In this method λs -values are determined in the microwire saturated by an axial magnetic field, H. Simultaneously, low AC transverse field, Hc, generated by an AC electric current flowing along the microwire allows a reversible magnetization rotation. More detailed SAMR method description and of the set-up adapted for evaluation of magnetostriction coefficient in microwires are provided elsewhere [54,55].…”

Section: Experimental Methods and Materialsmentioning

confidence: 99%

Optimization of Magnetic Properties of Magnetic Microwires by Post-Processing

Zhukova¹,

Corte-León²,

González-Legarreta³

et al. 2020

Preprint

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The influence of post-processing conditions on the magnetic properties of amorphous and nanocrystalline microwires have been thoroughly analyzed, paying attention on the influence of magnetoelastic, induced and magnetocrystalline anisotropies on the hysteresis loops of Fe-, Ni- and Co-rich microwires. We showed that magnetic properties of glass-coated microwires can be tuned by the selection of appropriate chemical composition and geometry in as-prepared state or further considerably modified by appropriate post-processing, which consists of either annealing or glass-coated removal. Furthermore, stress-annealing or Joule heating can further effectively modify the magnetic properties of amorphous magnetic microwires owing to induced magnetic anisotropy. Devitrification of microwires can be useful for either magnetic softening or magnetic hardening of the microwires. Depending on the chemical composition of the metallic nucleus and on structural features (grain size, precipitating phases) nanocrystalline microwires can exhibit either soft magnetic properties or semi-hard magnetic properties. We demonstrated that the microwires with coercivities from 1 A/m to 40 kA/m can be prepared.

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“…from λ s ¡5 ¢ 10 ¡6 at x 1, to λ s 38 ¢ 10 ¡6 at x 0.2. Nearly-zero λ s -values can be achieved at Co/Fe 70{5 [34,35].…”

Section: Engineering Of Magnetic Properties In As-prepared Magnetic Munclassified

Engineering of Magnetic Properties of Magnetic Microwires

Zhukov

Ipatov²,

Blanco

et al. 2018

Acta Phys. Pol. A

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We present an overview of the factors affecting soft magnetic properties, fast domain wall propagation and giant magnetoimpedance (GMI) effect in thin amorphous wires. The magnetoelastic anisotropy is one of the most important parameters that determine the magnetic properties of glass-coated microwires and therefore annealing can be very effective for manipulation the magnetic properties of amorphous ferromagnetic glass-coated microwires. Increasing of DW velocity in Fe-rich and Fe-Ni based (low Ni content) microwires is achieved after annealing. After heat treatment of Co-rich microwires we can observe transformation of inclined hysteresis loops to rectangular and coexistence of fast magnetization switching and GMI effect in the same sample. On the other hand stress annealing of Fe-and Co-rich microwires allows achievement of considerable magnetic softening and GMI effect enhancement.

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Magnetostriction investigation of soft magnetic microwires

Cited by 61 publications

References 24 publications

Optimization of magnetic properties and GMI effect of Thin Co-rich Microwires for GMI Microsensors

Optimization of magnetic properties and GMI effect of Thin Co-rich Microwires for GMI Microsensors

Optimization of Magnetic Properties of Magnetic Microwires by Post-Processing

Engineering of Magnetic Properties of Magnetic Microwires

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