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Atomically disordered oxides are seen as suitable candidate for fast oxygen conduction due to their remarkable enhancement in oxygen diffusivity compared with ordered oxides. In particular, disordered derivatives of pyrochlore-structured oxides (A2B2O7) are seen as an interesting prospect due to the intrinsic existence of oxygen vacancies in their lattice. Using energetic ion irradiation, we demonstrated...
Recently developed concentrated solid solution alloys (CSAs) are shown to have improved performance under irradiation that depends strongly on the number of alloying elements, alloying species, and their concentrations. In contrast to conventional dilute alloys, CSAs are composed of multiple principal elements situated randomly in a simple crystalline lattice. As a result, the intrinsic disorder has...
The safe immobilization of nuclear waste in geological repositories is one of the major scientific challenges facing humanity today. Crystalline ceramics hold the promise of locking up actinides from nuclear fuel and excess weapons plutonium in their structure thereby isolating them from the environment. This paper presents the atomistic details of radiation damage in a model ceramic, zircon.
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