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Updated: Jun 18, 2026

Fabrication of Spatially Confined Complex Oxides
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Published on: July 1, 2013

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制造,缺陷化学和微观结构的Mn-化UO2

H Smith1, L T Townsend1, R Mohun1

  • 1Department of Materials Science and Engineering, The University of Sheffield, Sheffield, UK.

Scientific reports
|January 18, 2024
PubMed
概括

二氧化 (UO2) 显示出作为耐事故核燃料的前景. 研究证实Mn2+替代U4+具有氧空位电荷补偿,增强核燃料性能.

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Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...
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Non-stoichiometric defects refer to a type of defect in the crystal structure of a compound where the ratio of its constituent elements deviates from the ideal stoichiometric ratio. There are two main types of non-stoichiometric defects: metal excess defects and metal deficiency defects.Metal excess defects occur when there is a slight surplus of metal ions than what is required by the stoichiometric ratio of the compound. For example, heating a sodium chloride crystal in sodium vapor results...