| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Ceramics for a New Generation of Nuclear Energy Systems and Applications
|
| Presentation Title |
Radiation Effects in Single-crystal High-entropy Oxides |
| Author(s) |
Candice Kinsler-Fedon, Lauren Nuckols, Anamul H. Mir, Christopher Nelson, David Mandrus, Yanwen Zhang, Veerle Keppens, William J. Weber |
| On-Site Speaker (Planned) |
William J. Weber |
| Abstract Scope |
High-entropy pyrochlore oxides have recently gained recognition for their low thermal conductivity and tunable mechanical capabilities, but little is known about their irradiation behavior. In this work, the heavy-ion irradiation response of single-crystal, high-entropy oxides (HEO) with the pyrochlore structure have been investigated. The damage accumulation behavior at 300 K due to 4 MeV Au ion irradiation of a <100>-oriented HEO single crystal has been investigated by Rutherford backscattering spectrometry in channeling mode. Transmission electron microscopy with in situ irradiation using 600 keV Xe ions has been employed to determine the temperature dependence of amorphization in the same HEO composition. In another HEO single-crystal composition, the amorphization due to 23 MeV Ni ions has been characterized by Raman spectroscopy. The results obtained on these HEO pyrochlores are compared to those of single-component pyrochlores. |