Controlling the domain wall dynamics in Fe-, Ni- and Co-based magnetic microwires

Corte-León, Paula; González-Legarreta, Lorena; Ipatov, M.; Blanco, J.M.; Churyukanova, M.; Taskaev, S.; Zhukov, А.

doi:10.1016/j.jallcom.2020.155170

Cited by 19 publications

(50 citation statements)

References 59 publications

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“…In the case of stress-annealing, the tensile stress was applied during the annealing, as well as during the sample cooling in the furnace. The stress value in the metallic nucleus, σ m , was evaluated considering different Young's modulus of metal, E 2 , and glass, E 1 , as follows [43,48,52]: (1) where K = E 2 /E 1 , S m , and S gl are the metallic nucleus and the glass coating cross sections, respectively, and P is the applied mechanical load. Hysteresis loops have been recorded using the fluxmetric method adapted for studies of magnetic microwires [49].…”

Section: Compositionmentioning

confidence: 99%

Optimization of Magnetic Properties of Magnetic Microwires by Post-Processing

et al. 2020

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The influence of post-processing conditions on the magnetic properties of amorphous and nanocrystalline microwires has been thoroughly analyzed, paying attention to 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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Section: Compositionmentioning

confidence: 99%

Optimization of Magnetic Properties of Magnetic Microwires by Post-Processing

et al. 2020

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Section: Experimental Methods and Materialsmentioning

confidence: 99%

“…Such axial magnetic anisotropy is intrinsically related to a peculiar domain structure consisting of inner axially magnetized single domain responsible for observation of the single and large Barkhausen jump and outer domain shell with radial magnetization orientation [9,59,60]. The remagnetization of such microwires is running by the depinning of the reversed domains inside the inner single domain and the consequent domain wall propagation [9,52,[59][60][61]. Perfectly, rectangular shape of the hysteresis loop is related to an extremely high velocity of such domain wall propagation.…”

Section: Effect Of Magnetoelastic Anisotropy On Magnetic Properties Omentioning

confidence: 99%

“…As shown above, conventional annealing provides limited possibilities for tuning the hysteresis loops. Accordingly, several attempts have been performed recently to search more efficient post-processing allowing tuning the magnetic properties [43,52,97]. Peer-reviewed version available at Processes 2020, 8, 1006; doi:10.3390/pr8081006…”

Section: Effect Of Induced Magnetic Anisotropy On Hysteretic Magneticmentioning

confidence: 99%

“…One of the most promising and effective methods for tuning of the magnetic properties of magnetic microwires is stress-annealing. In the case of magnetic microwires with positive magnetostriction coefficient, this post-processing allows remarkable magnetic softness improvement [43,52,86,87,94,95].…”

Section: Effect Of Induced Magnetic Anisotropy On Hysteretic Magneticmentioning

confidence: 99%

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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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