|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Magnetics and the Critical Materials Challenge: An FMD Symposium Honoring Matthew J. Kramer
||Magnetoelastic Interactions Reduce Hysteresis in Soft Magnets
||Negar Ahani, A. Renuka Balakrishna
|On-Site Speaker (Planned)
Soft magnets have the smallest coercivity compared to all magnets, which makes them well-suited for energy conversions, such as in rapid power-conversion electronics, induction motors for electric vehicles, and spintronics devices. More recently, soft magnets have been emerging as potential candidates for sustainable energy conversion, however, we do not have a systematic strategy to discover novel soft magnets with drastically reduced coercivities. In today's talk, I will discuss how the material's fundamental elastic stiffness constants and the residual stresses can be engineered to assist magnetization reversal and thus dramatically reduce coercivity. We use a theoretical framework based on micromagnetics to show that magnetoelastic interactions control both the shape and size of hysteresis loops. Our findings provide fundamental insights into the origins of magnetic hysteresis and propose a quantitative relationship to guide alloy development.
||Magnetic Materials, Modeling and Simulation,