| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ceramic Materials for Nuclear Energy Research and Applications
|
| Presentation Title |
Exotic Magneto-elastic Properties in Uranium Dioxide |
| Author(s) |
Krzysztof Gofryk |
| On-Site Speaker (Planned) |
Krzysztof Gofryk |
| Abstract Scope |
The magneto-elastic properties of nuclear materials remain an unsolved puzzle resulting from the lack of a thorough understanding of the strong coupling between magnetism and lattice vibrations. During the talk, we will show the results of our recent detailed thermodynamic and structural measurements on uranium dioxide, main nuclear fuel. We will present how these studies can be used to examine magneto-structural properties in this nuclear material. Understanding the magneto-elastic coupling in UO2 is important since it may affect its thermal transport, so critical in nuclear technology. The unusually strong correlations between the magnetic moments in U-atoms and lattice distortions are also a direct consequence of the non-collinear symmetry of the magnetic state, reduction of its thermal conductivity, and appearance of piezomagnetism at low temperatures. We will discuss the implications of these results in the context of the thermal properties of UO2. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Magnetic Materials, Ceramics |