| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Functional Nanomaterials 2024
|
| Presentation Title |
Unraveling Ordering Phenomena in Nanomaterials Using Advanced TEM Techniques |
| Author(s) |
Lilian M. Vogl, Peter Schweizer, Andrew M. Minor |
| On-Site Speaker (Planned) |
Lilian M. Vogl |
| Abstract Scope |
Short-range ordering has been widely observed in bulk-alloys with significant impact on their mechanical properties. However, the investigation of ordering characteristics in semiconducting and metallic nanostructures has been largely unexplored. Considering the large surface area to volume ratio of nanostructures, it is expected that local variance within the crystal lattice would have an amplified effect. Therefore, studying the precise characteristics of local ordering in nanostructures becomes all the more important to better tailor their behavior. By using our unique small-scale model systems based on alloyed nanowires and thin films, we investigate the transition from the disordered state to intermetallic phases by using advanced Transmission Electron Microscopy (TEM). The diffuse intensity distribution in electron diffraction patterns are assigned to short range ordering on atomic scale. With increasing degree of ordering, microdomains are observed showing characteristic long-rang periodicity. Finally, the strain at the order-disorder domain boundaries is analyzed by 4DSTEM. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nanotechnology, Characterization, Thin Films and Interfaces |