About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Ceramic Materials and Processing
|
| Presentation Title |
Disorder as a Design Tool: Tuning Cation Inversion in High Entropy Spinel Oxides |
| Author(s) |
Christina M. Rost |
| On-Site Speaker (Planned) |
Christina M. Rost |
| Abstract Scope |
High entropy oxides (HEOs) represent a new paradigm for materials design, here configurational disorder enables access to unconventional crystal structures and emergent properties. Among these, high entropy spinel oxides (HESOs) are particularly compelling due to their ability to host diverse cations across tetrahedral and octahedral sites. This structural flexibility allows for extended solubility limits and non-traditional coordination environments, yet the impact of compositional complexity on cation inversion and its link to functional behavior remains poorly understood. This talk will highlight recent advances in probing and controlling inversion in HESOs using multi-edge synchrotron X-ray absorption spectroscopy, Mössbauer spectroscopy, and density functional theory. We demonstrate how increasing chemical complexity modulates crystal field stabilization energies, enabling tunable inversion and dramatic changes in magnetic and structural properties. These insights establish new design strategies for tailoring functional ceramics through controlled disorder. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Powder Materials, High-Entropy Alloys |