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Surface X-Ray Diffraction Study On Polar Oxide Surface And Interface, Wei Han

Theses and Dissertations

An atomic scale study of surface/interface structure is required to properly understand physical and chemical phenomena such as crystal growth, lubrication and electrochemistry. The stability of polar oxide surface has long been an interesting question. A bulk-terminated polar oxide surface comprises alternating layers of opposite charges, thus resulting in diverging surface energies. In order to reduce the surface energy, various reconstruction-stabilized MgO (111) surfaces have been reported

experimentally. However, the atomic structure of the MgO (111)rt3×rt3R30o<\super> reconstructed surface remains unclear.

Using a third-generation X-ray source is one of the feasible methodologies to probe such a system due to its increase …