Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Tuning of Magnetoimpedance Effect and Magnetic Properties of Fe-rich Glass-coated Microwires by Joule Heating.

Alvaro Gonzalez
ORCID logo ,
Valentina Zhukova
ORCID logo ,
Paula Corte-Leon
,
Alexandr Chizhik
,
Mihail Ipatov
ORCID logo ,
Juan Maria Blanco
,
Arcady Zhukov
* ORCID logo
Version 1 : Received: 21 January 2022 / Approved: 24 January 2022 / Online: 24 January 2022 (07:30:49 CET)

A peer-reviewed article of this Preprint also exists.

Gonzalez, A.; Zhukova, V.; Corte-Leon, P.; Chizhik, A.; Ipatov, M.; Blanco, J.M.; Zhukov, A. Tuning of Magnetoimpedance Effect and Magnetic Properties of Fe-Rich Glass-Coated Microwires by Joule Heating. Sensors 2022, 22, 1053. Gonzalez, A.; Zhukova, V.; Corte-Leon, P.; Chizhik, A.; Ipatov, M.; Blanco, J.M.; Zhukov, A. Tuning of Magnetoimpedance Effect and Magnetic Properties of Fe-Rich Glass-Coated Microwires by Joule Heating. Sensors 2022, 22, 1053.

Abstract

Influence of Joule heating on magnetic properties, giant magnetoimpedance (GMI) effect and domain wall (DW) dynamics of Fe75B9Si12C4 glass-coated microwires was studied. A remarkable increase in GMI ratio is observed in Joule heated samples. The hysteresis loops of Joule heated samples maintain a rectangular shape, while a slight decrease in coercivity after Joule heating is observed. On the other hand, a modification of MOKE hysteresis loops is observed upon Joule heating. Additionally, DW dynamics improvement after Joule heating is observed. The observed GMI ratio improvement along with the change in MOKE loops and DW dynamics improvement has been discussed considering magnetic anisotropy induced by Oersted magnetic field in the surface layer during Joule heating and the internal stress relaxation. A remarkable GMI ratio im-provement observed in Fe-rich Joule-heated microwires with a rectangular hysteresis loop and fast DW propagation, together with the fact that Fe is a more common and less expensive metal than Co, makes them suitable for use in magnetic sensors.

Keywords

Magnetic microwires; Magnetic anisotropy; Joule heating, Giant magnetoimpedance, Domain wall propagation, Hysteresis loop.

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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