科研之友
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摘要
Dissolution of magnesium oxide (MgO)(100) surfaces in water was examined by an atomic force microscope (AFM) and X-ray photoelectron spectroscopy (XPS) techniques. MgO(100) surfaces annealed at 1273 K in air for 288 h showed rectangular terraces surrounded by multiatomic height steps along the < 011 > directions. After immersion in water, bank-like structures appeared along the < 011 > steps: the end of the terraces remained smooth, while the inner regions of the terraces were roughened and subsided with respect to the end. Epitaxial growth of Mg(OH)(2) from the < 011 > steps toward the inner regions of the terraces is proposed.
- 出版日期2015-4-16
