About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Advanced Magnetic Materials for Energy and Power Conversion Applications
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Presentation Title |
Engineering of Magnetic Properties of Co- -rich Microwires by Post-processing
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Author(s) |
Lorena Gonzalez-Legarreta, Valentina Zhukova, Mihail Ipatov, Paula Corte-Leon, Juan Maria Blanco, Arcady Zhukov |
On-Site Speaker (Planned) |
Paula Corte-Leon |
Abstract Scope |
We studied effect of annealing conditions on GMI effect and DW dynamics of Co- rich Fe3.6Co69.2Ni1B12.5Si11Mo1.5C1.2 glass-coated microwires prepared by Tailor-Ulitovsky technique. A considerable coercivity, Hc, increase related to transformation of hysteresis loops from linear to rectangular after conventional annealing is observed. Despite that the stress-annealed microwires also present rectangular hysteresis loops, the Hc –values of the stress-annealed microwires are considerably lower than those annealed without stress. We observed an increase of GMI effect in annealed and stress-annealed microwires.
In all the annealed and stress-annealed samples presenting rectangular hysteresis loops we observed the remagnetization by single DW propagation. The DW velocity, v, and DW mobility, S, depend on annealing conditions. At certain annealing conditions we observed v up to 4 km/s and S up to 29 (m2/s•A). Observed change of hysteresis loop discussed considering the modification of the magnetostriction coefficient after annealing, the stress relaxation and stress-induced magnetic anisotropy. |
Proceedings Inclusion? |
Planned: |