About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Magnetic Materials
|
Presentation Title |
High-Temperature Stability of Induced Anisotropy and Permeability in Co-Rich Nanocrystalline Soft Magnetic Alloys |
Author(s) |
Tyler W. Paplham, Yuankang Wang, Paul Ohodnicki |
On-Site Speaker (Planned) |
Tyler W. Paplham |
Abstract Scope |
It is well known that large magnetic anisotropies can be induced in nanocrystalline soft magnetic material by applying an external field or mechanical strain during annealing. At high temperature this anisotropy can become unstable due to an instability in the underlying mechanism of anisotropy. This presents difficulty for achieving stable, linear performance in extreme-temperature inductor applications, and there is thus an incentive to understand the composition, temperature, and heating rate dependence of this breakdown to determine ideal pathways for maximizing anisotropy stability. Here we present initial studies of a Co-rich nanocrystalline alloy, wherein experiment and theoretical considerations will be applied to (1) measure magnitude of induced anisotropies via typical field/strain annealing processes, (2) characterize stability of the induced anisotropy and associated permeability at temperatures approaching 500°C, and (3) apply theory to explain the trends in observed breakdown of anisotropy. |
Proceedings Inclusion? |
Planned: |
Keywords |
Magnetic Materials, High-Temperature Materials, Phase Transformations |