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在MgO/Ag上测量点缺陷的电荷状态 (001)

T König1, G H Simon, H-P Rust

  • 1Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany.

Journal of the American Chemical Society
|November 14, 2009
PubMed
概括

研究人员使用先进的显微镜研究了MgO膜的表面缺陷. 他们确定了四种主要的缺陷类型,澄清了它们在催化和表面特性中的作用.

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Imperfections in Crystal Structure: Stoichiometric Point Defects01:26

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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...