About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Magnetic Materials for Energy and Power Conversion Applications
|
Presentation Title |
Engineering of Magnetic Properties and Magnetoimpedance Effect of Fe-rich Microwires by Reversible and Irreversible Stress-annealing Anisotropy |
Author(s) |
Paula Corte-Leon, Valentina Zhukova, Juan Maria Blanco, Mihail Ipatov, Arcady Zhukov |
On-Site Speaker (Planned) |
Paula Corte-Leon |
Abstract Scope |
The magnetic properties of amorphous FeSiBC microwires have been thoroughly analyzed paying attention on the influence of annealing (under stress or without stress) on the GMI effect and magnetic properties of Fe-Si-B-C microwires. Stress annealing allows the induction of transverse magnetic anisotropy and the GMI effect improvement. This stress-annealing induced anisotropy depends on the stress-annealing conditions: annealing temperature, time and stress applied during the annealing and can be partially annealed out by subsequent furnace annealing. The reversibility of the stress-annealing induced anisotropy depends on the stress-annealing conditions: most of the transverse induced magnetic anisotropy obtained at high stresses values is irreversible. Stress-annealing followed by annealing without stress allows further GMI improvement. Coercivity, remanent magnetization, and magnetoimpedance ratio of FeSiBC microwires can be tuned by annealing conditions. Observed experimental results are discussed considering relaxation of internal stresses, compressive “back-stresses” arising after stress annealing and topological short range ordering. |
Proceedings Inclusion? |
Planned: |