| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Emergent Materials under Extremes and Decisive In Situ Characterizations
|
| Presentation Title |
Far-From-Equilibrium Processing of Materials under Extreme Conditions |
| Author(s) |
Eric O'Quinn, Alexandre Solomon, Casey Corbridge, Antonio Fuentes, Maik Lang |
| On-Site Speaker (Planned) |
Eric O'Quinn |
| Abstract Scope |
The fabrication of next generation energy materials requires comprehensive knowledge of material modifications under far-from-equilibrium. High energy ball milling and swift heavy ion irradiation are two unique processing routes that provide access to unconventional structural features which cannot be obtained by traditional synthesis techniques. Using bixbyite-structured lanthanide sesquioxides (Ln<sub>2</sub>O<sub>3</sub>) as a model system, we demonstrate the formation of a variety of defect structures and non-equilibrium phases that are inaccessible by other approaches. Different high-pressure and high-temperature phases form during the highly transient processing and transformation pathways can be adjusted by milling and irradiation parameters. The type of induced structural modifications strongly depends on the physics of interaction and detailed characterization of the resulting material modifications over a wide range of experimental conditions present a first step to understand and control matter far away from equilibrium. |