About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Hysteresis and Energy Barriers in Soft Magnets |
| Author(s) |
A. Renuka Balakrishna, Hongyi Guan |
| On-Site Speaker (Planned) |
A. Renuka Balakrishna |
| Abstract Scope |
Past research has often correlated a magnet's hysteresis width with its magnetocrystalline anisotropy constant. Based on this relationship, a common approach to reducing magnetic hysteresis has been to develop alloys with anisotropy constant as close to zero as possible. Contrary to this view, we show that magnets with large anistoropy can have small hysteresis for specific combinations of magnetoelastic constants and applied stresses. Using our recently developed and validated micromagnetics framework, we systematically investigate the interplay of material constants, applied stresses, and needle domains to collectively lower the energy barrier for magnetization reversal. This energy barrier approach enables us to quantify the effects of magnetoelastic interactions, in addition to magnetocrystalline anisotropy, on hysteresis. Our findings show a nontrivial mathematical relationship between magnetic material constants for which magnetic hysteresis can be minimized. These results are quantitative and potentially guide the design of soft magnets outside the traditional 𝜅1→0 region. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, Modeling and Simulation, |