About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Exchange-Coupled Ferromagnetic-Antiferromagnetic Nanostructures: A Micromagnetic Simulation Study |
| Author(s) |
Yu U. Wang, Alyssa Horne, Ranjit Pati, Yongmei M. Jin |
| On-Site Speaker (Planned) |
Yu U. Wang |
| Abstract Scope |
A micromagnetic model is developed to simulate magnetization processes in ferromagnetic-antiferromagnetic (FM-AFM) two-phase nanostructures. The model allows us to consider various combinations of material properties and to address different microstructural forms, including bulk, film, and nanoislands. It is particularly applied to analyze recent experimental observations of unusual magnetic hysteresis loops in nanoisland assemblies formed by epitaxial Permalloy deposition on a silicon substrate, where the nanoislands are shown to consist of an antiferromagnetic Fe-rich layer and a ferromagnetic Ni-rich layer. The simulations provide insights into the underlying microstructural mechanisms responsible for the observed hysteretic behavior in FeNi-Si nanoislands. The results are also compared with those from ferromagnetic-ferromagnetic two-phase nanostructures to highlight the influence and potential of FM-AFM exchange coupling on the magnetic properties of nanocomposites. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, Modeling and Simulation, Composites |