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Full-Text Articles in Nuclear Engineering
Characterizing The Structure And Radiation Resistance Of Weberite-Type Complex Oxides, Igor M. Gussev
Characterizing The Structure And Radiation Resistance Of Weberite-Type Complex Oxides, Igor M. Gussev
Doctoral Dissertations
Weberite-type A3BO7 oxides, where A is a trivalent rare earth and B is a pentavalent element like Ta, have been a focus of research due to the discovery of the weberite-type local atomic arrangement in ceramics with a defect-fluorite structure. Earlier studies primarily examined their long-range structures, leaving gaps in understanding their short-range atomic behavior. This thesis investigates various weberite-type tantalates across all structural scales. There has been debate over the long-range structure of Y3TaO7, a medium-sized rare earth tantalate oxide, particularly regarding its spacegroup symmetry. This work identifies Y3TaO7 …
Preparation Of High Entropy Titanite Pyrochlore And Radiation Stability Study, Adam Gootgeld
Preparation Of High Entropy Titanite Pyrochlore And Radiation Stability Study, Adam Gootgeld
All Theses
Pyrochlore has been studied as a host phase for safe storage of radionuclides and exists naturally with long-term stability with good long-range order [1]. High entropy oxides show promising tunable properties that could demonstrate favorable bulk deposit of radioactive materials such as spent nuclear fuel (Uranium and other actinides). It is proposed that using high entropy oxides (HEOs) as the cation in this framework will shift the gibbs free energy so that radioactive nuclear waste will be stabilized for safe, long-term, eco-friendly storage. We have established a consistent method to fabricate high entropy titanite pyrochlores. In this study, ion beam …