Optimization of Magnetic Properties of Magnetic Microwires by Post-Processing

Valentina Zhukova; Paula Corte-León; Lorena Gonzalez-Legarreta; Ahmed Talaat; Juan Maria Blanco; Mihail Ipatov; Jesus Olivera; Arcady Zhukov

doi:10.20944/preprints202007.0107.v1

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preprints.org > chemistry and materials science > electronic, optical and magnetic materials > doi: 10.20944/preprints202007.0107.v1

Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

Optimization of Magnetic Properties of Magnetic Microwires by Post-Processing

Valentina Zhukova

Paula Corte-León

Lorena Gonzalez-Legarreta

Version 1 : Received: 7 July 2020 / Approved: 7 July 2020 / Online: 7 July 2020 (02:41:20 CEST)

A peer-reviewed article of this Preprint also exists.

Zhukova, V.; Corte-Leon, P.; González-Legarreta, L.; Talaat, A.; Blanco, J.M.; Ipatov, M.; Olivera, J.; Zhukov, A. Optimization of Magnetic Properties of Magnetic Microwires by Post-Processing. Processes 2020, 8, 1006. Zhukova, V.; Corte-Leon, P.; González-Legarreta, L.; Talaat, A.; Blanco, J.M.; Ipatov, M.; Olivera, J.; Zhukov, A. Optimization of Magnetic Properties of Magnetic Microwires by Post-Processing. Processes 2020, 8, 1006.

Abstract

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.

Keywords

Magnetic microwires; post-processing; hysteresis loops; magnetic anisotropy

Subject

Chemistry and Materials Science, Electronic, Optical and Magnetic Materials

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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