About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
2026 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-14: Inducing Magnetic Responses in a Ductile Intermetallic Material Through Plastic Deformation |
| Author(s) |
Bailey E. Rhodes, Justin Mayer, W. Streit Cunningham, Arda Genc, Solène Comby-Dassonneville, Thomas Cornelius, Olivier Thomas, Ram Seshadri, Yolita Eggeler, Irene Beyerlein, Daniel Gianola |
| On-Site Speaker (Planned) |
Bailey E. Rhodes |
| Abstract Scope |
Intermetallic materials optimized for their magnetic performance often experience in-service stresses that can be deleterious to their functional properties. Here, we investigate the impact of deformation on the magnetic properties of the MnCu2Al Heusler intermetallic by inducing a state of deformation. Magnetization measurements reveal an order of magnitude decrease in the saturation magnetization following severe plastic deformation. Ab initio gamma energy surface calculations predict that the planar defect structures generated by plastic deformation host local antiferromagnetic coupling interactions that differ from the bulk ferromagnetic material. Williamson-Hall fits performed on synchrotron X-ray diffraction data indicate that there is a 4-fold increase in defect density associated with deformation, while DPC STEM imaging reveals the presence of a unique antiferromagnetic contrast signature associated locally at the defects. Our estimations of the volume of antiferromagnetic material hosted by the defects in the deformed sample corroborates the experimentally observed change in the saturation magnetization. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Magnetic Materials, Mechanical Properties, Nanotechnology |