@article{10902/18634,
year = {2020},
month = {7},
url = {http://hdl.handle.net/10902/18634},
abstract = {The influence of post-processing (annealing and stress-annealing) on the magnetic softness, Giant magnetoimpedance (GMI) effect and domain wall dynamics of Fe3.6Co69.2Ni1B12.5Si11Mo1.5C1.2 glass-coated microwires is studied.
 As-prepared Co-rich glass-coated microwire presents linear hysteresis loops and rather higher magnetoimpedance ratio with double-peak magnetic field dependence, typical for materials with transverse magnetic anisotropy.
 Considerable magnetic hardening and transformation of linear hysteresis loop with low coercivity (Hc ≈ 4 A/m) into rectangular with Hc ≈90 A/m upon annealing without stress is observed. However, we observed remarkable MI effect improvement at certain annealing conditions.
 Stress-annealing of studied microwire allows considerable magnetoimpedance ratio and domain wall velocity increasing. Additionally, remanent magnetization growth and coercivity decrease are generally observed upon stress annealing. Frequency dependence of maximum GMI ratio for as-prepared and annealed samples is evaluated. The obtained frequency dependence of the maximum GMI ratio allows determination of the optimal GMI measurement conditions for each sample. The observed stress-induced anisotropy and related changes in magnetic properties are discussed considering the internal stresses relaxation and "back-stresses".},
organization = {This work was supported by Spanish MCIU under PGC2018-099530-B-C31 (MCIU/AEI/FEDER, UE), by the Government of the Basque Country under PIBA 2018-44 projects, by Russian Foundation for Basic Research (Grant 16-53-48012) and partially supported by Act 211 Government of the Russian Federation, contract # 02.A03.21.0011. The authors thank for technical and human support provided by SGIker of UPV/EHU and European funding (ERDF and ESF).},
publisher = {Elsevier Ltd},
publisher = {Journal of Alloys and Compounds, 2020, 830, 154576},
title = {Route of magnetoimpedance and domain walls dynamics optimization in Co-based microwires},
author = {González Legarreta, Lorena and Corte León, Paula and Zhukova Zhukova, Valentina and Ipatov, Mihail and Blanco Aranguren, Juan María and Churyukanova, Margarita and Taskaev, Sergey and Zhukov Egorova, Arkady Pavlovich},
}