Growth and vibrational properties of MnOx thin films on Rh(111)
- 化学化工－已发表论文 
The growth, structures, and vibrational properties of ultrathin manganese oxide films on Rh(111) had been investigated using high-resolution electron energy loss spectroscopy (HREELS). X-ray photoelectron spectroscopy (XPS), low energy electron diffraction (LEED), low energy ion scattering spectroscopy (LEIS) and Auger electron spectroscopy (AES). MnOx grew in a layer-by-layer fashion on the Rh(111) surface. HREELS phonon features and XPS binding energies showed that an O-Mn-O- like tri-layer formed initially. Which was stable on the Rh(111) surface with MnOx coverage less than one monolayer. At above one monolayer. Mn3O4 was preferred as indicated from a four-phonon feature peaked at 133, 39, 68 and 83 meV in HREELS. Higher temperature oxidation and annealing were found to improve the long-range order of the MnOx films. (C) 2012 Elsevier B.V. All rights reserved.