About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Magnetic Materials for Energy and Power Conversion Applications
|
| Presentation Title |
Visualizing the 2D and 3D Magnetic Domain Evolution Processes in Nd-Fe-B Sintered Magnet by Advanced X-ray Microscopy |
| Author(s) |
Motohiro Suzuki, Kentaro Toyoki, Tetsuya Nakamura |
| On-Site Speaker (Planned) |
Motohiro Suzuki |
| Abstract Scope |
Permanent magnet materials, used for high-efficiency electric motors for low-emission hybrid/electric vehicles, and high-efficient electric power generators, are regarded as vital to the sustainable society. The energy-serving performance of these products is desired to be improved by developing a new permanent magnet material that has superior characteristics, such as higher coercivity and increased maximum energy product. In this study, we used state-of-the-art synchrotron-based X-ray magnetic microscopy techniques to provide new insights of the magnetization reversal process in an Nd-Fe-B sintered magnet, which are closely related to the underlying mechanism that can emerge high coercivity. A scanning two-dimensional X-ray magnetic microscopy under high magnetic field successfully visualized the magnetization reversal processes by grain-by-grain manner, demonstrating the creation of reversed magnetic domains and domain evolutions. Another three-dimensional X-ray magnetic tomography technique allows us to see through the magnetic domains inside a bulk magnet. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |