Effect of annealing on magnetic properties and structure of Fe-Ni based magnetic microwires

Zhukova, V.; Korchuganova, O. A.; Aleev, A. A.; Tcherdyntsev, Victor V.; Churyukanova, M.; Medvedeva, E. V.; Seils, Sascha; Wagner, Julia; Ipatov, M.; Blanco, J.M.; Kaloshkin, S.D.; Аронин, А. С.; Abrosimova, G. E.; Орлова, Н. Н.; Zhukov, А.

doi:10.1016/j.jmmm.2017.03.028

Cited by 15 publications

(10 citation statements)

References 36 publications

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“…One of these phenomena is local atomic environment changes in an amorphous structure related to annealing and clustering. Indeed, local nano-sized precipitations have been observed in annealed Fe-Ni based microwires by the atom probe tomography [85]. Considering that the annealing is the common route for the internal stresses relaxation, an observed annealing effect on H c in Fe-Ni microwires looks unexpected.…”

Section: Hk(σapp) Dependence Evaluated Frommentioning

confidence: 99%

“…From our previous studies, we must disregard the crystallization process, since Fe-Ni based microwires annealed at the same T ann for 8 h still present amorphous structure [85]. Therefore, for interpretation of observed H c (t ann ) dependencies in Fe-Ni based microwires, several phenomena can be considered.…”

Section: Hk(σapp) Dependence Evaluated Frommentioning

confidence: 99%

Section: Hk(σapp) Dependence Evaluated Frommentioning

confidence: 99%

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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: Hk(σapp) Dependence Evaluated Frommentioning

confidence: 99%

Section: Hk(σapp) Dependence Evaluated Frommentioning

confidence: 99%

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Optimization of Magnetic Properties of Magnetic Microwires by Post-Processing

et al. 2020

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“…Observed magnetic softening is related to the presence of magnetic field that can considerably affect the magnetic anisotropy of amorphous materials [105]. It was reported that the macroscopic magnetic anisotropy of amorphous materials is originated by a preferred magnetization direction during the annealing and was discussed in terms of either the directional ordering of atomic pairs or compositional and topological short-range ordering [83][84][85][93][94][95]105]. Adapted from ref [102].…”

Section: Effect Of Induced Magnetic Anisotropy On Hysteretic Magneticmentioning

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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“…Amorphous ferromagnetic microwires are currently under intensive experimental [1,2,3] and theoretical [4,5,6] investigation because of their unique and tunable properties such as very strong giant magneto-impedance effect and bistability with possible applications as components of high performance magnetic and magnetoelastic sensors, actuators [7,8] and smart composites [9]. Bistable microwires with positive magnetostriction are of particular interest due to an extremely fast domain wall propagation [10] resulting in quick remagnetisation.…”

Section: Introductionmentioning

confidence: 99%

Effect of anisotropy distribution on local nucleation field in bistable ferromagnetic microwires

Kwiatkowski

2019

Journal of Applied Physics

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Critical parameters defining the local nucleation field in amorphous ferromagnetic microwires with positive magnetostriction are obtained analytically through scaling procedures. Exact value of the nucleation field is obtained numerically as a function of geometric parameters of anisotropy distribution, which is fully taken into account instead of being averaged out. It is established that the value of nucleation field depends predominantly on the steepness of anisotropy change withing the boundary between axial and radial domains, while the maximal value of anisotropy inside the wire or an overall average is not relevant. arXiv:1703.08066v4 [cond-mat.mtrl-sci]

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Effect of annealing on magnetic properties and structure of Fe-Ni based magnetic microwires

Cited by 15 publications

References 36 publications

Optimization of Magnetic Properties of Magnetic Microwires by Post-Processing

Optimization of Magnetic Properties of Magnetic Microwires by Post-Processing

Optimization of Magnetic Properties of Magnetic Microwires by Post-Processing

Effect of anisotropy distribution on local nucleation field in bistable ferromagnetic microwires

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