About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nanostructured Materials in Extreme Environments IV
|
| Presentation Title |
Atomic-Scale Defect Healing in In2O3 Under Dual Stage Radiation |
| Author(s) |
Sogol Karami, Niaz Abdolrahim, Buh Kum Tatchen, Ahmad Kirmani |
| On-Site Speaker (Planned) |
Sogol Karami |
| Abstract Scope |
Indium Oxide (In₂O₃) is a wide-bandgap semiconductor with notable transparency, electrical conductivity, and radiation tolerance, making it a promising candidate for electronic applications in extreme environments. Recent experiments demonstrated defect healing and improved electrical performance in metal oxides under dual-dose irradiation. Motivated by these findings, we performed molecular dynamics simulations to probe how In₂O₃ responds to sequential atomic-scale irradiation. An interatomic potential was developed to accurately model In₂O₃ under harsh conditions. We then mimicked dual-dose irradiation through a two-stage cascade simulation: a low-energy primary knock-on event to introduce displacements and defects, followed by a high-energy event coupled with a two-temperature model to simulate further subsequent radiation damage. By tracking the evolution of oxygen vacancies and other defect species, we reveal the microscopic mechanisms that drive defect recovery and enhancements in electrical conductivity. Our results elucidate the self-healing processes in In₂O₃ under dual-dose irradiation and provide insights for radiation-resilient device design. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, Other, Other |