Mg clusters on MgO surfaces: characterization by MIES and electronic structure ab initio calculations

Growth of nickel nanoparticles on NiO/Ni(001): Evidence of adsorbed oxygen on metal particles by metastable induced electron spectroscopy (MIES)

“…It should also be mentioned that the authors found that the underlying (on-top adsorption) as well as the neighbouring oxide ions (hollow site) are raised from the surface to about one third of the distance between the adsorbed Ni 2+ cation and the surface. Adsorption between two surface oxygen atoms as the favourable adsorption site was also found by Kantorovich et al for Mg adsorption on MgO [33] where defect sites such as step edges were considered. These raised oxygen atoms might be the source of oxygen observed on top of the deposited nickel layer.…”

Additive coloring of thin, single crystalline MgO(001) films

“…22 A few surface science studies on additive coloring by Mg on single-crystalline MgO films have been performed. 23,24 Kantorovich et al employed metastable impact electron spectroscopy (MIES) on MgO(001) films after Mg deposition at 100 K and compared the experimental results with theoretical calculations. Even for the smallest amount of Mg, which is not defined in the paper, 24 a new feature at 2 eV above the valence band appeared in the band gap.…”

“…23,24 Kantorovich et al employed metastable impact electron spectroscopy (MIES) on MgO(001) films after Mg deposition at 100 K and compared the experimental results with theoretical calculations. Even for the smallest amount of Mg, which is not defined in the paper, 24 a new feature at 2 eV above the valence band appeared in the band gap. Based on the theoretical calculations the peak around 2 eV found at low coverage was rationalized by the presence of Mg atoms or small clusters, while at high coverage work function measurements proved the existence of metallic Mg clusters.…”

Energies and Dynamics of Photoinduced Electron and Hole Processes on MgO Powders

“…Recent developments in sample preparation techniques − facilitated the production of high surface area, nanometer-sized MgO powders exhibiting high concentrations of surface defects. Sample characterization by spectroscopic methods such as UV diffuse reflectance (UV-DR), , Fourier transform infrared spectroscopy (FTIR), electron paramagnetic resonance (EPR), , metastable impact electron spectroscopy (MIES), , and others provided important insights into the surface structures, spectroscopy and chemical properties of nanometer-sized MgO particles. In particular, it is now well established that some of the spectroscopic and chemical properties of the MgO surface are determined by low coordinated (LC) oxygen ions at edges, kinks and corners (see, for example refs and ).…”