Letter
Observation of Surface Hydroxyl on Cleaved MgO(001)
2008 Volume 51 Issue 3 Pages 121-123
Details
2008 Volume 51 Issue 3 Pages 121-123
An exposure of a cleaved MgO(001) surface to water generates hydroxyl (OH) and/or magnesium hydroxide (Mg(OH)2) on the MgO surface. We prepared OH or Mg(OH)2 rich surface by different dose of water. The change of the surface composition (MgO, OH, Mg(OH)2) by heating (room temperature ~200°C) was investigated with O1s spectra by X-ray photoelectron spectroscopy. The samples were heated by baking the vacuum chamber. In hydroxyl surface the OH component reduced to about 30% after the heating of 200°C. On the other hand, in Mg(OH)2 rich surface, the Mg(OH)2 component did not change by same thermal treatment.
