Author(s)

Khalil Ismaiel Hashim

Physics Department, Faculty of Science, Benghazi University, Benghazi, Libya.

The work described in this paper is a study of gold adsorption on the whole tip surface of iridium field emitter. The study has been carried out using field emission microscope. Changes in electron work function of the iridium substrate which are produced by vapor of deposition of submonolayers of gold in ultra high vacuum have been measured by noting the changes in the slope of Fowler-Nordheim plots. The same procedure for studying the adsorption of copper on iridium [1] was followed to study the adsorption of gold on iridium. Adsorption of gold was examined on the iridium surface containing the (100) ring which could not be removed thermally.

Field Emission Microscope, Electron Work Function, Fowler-Nordheim Plots, Coadsorption, Pulsed Temperature-Field (T-F) Emission Microscopy, Low Energy Electron Diffraction (LEED), Auger Electron Spectroscopy (AES), Field Ion Microscopy (FIM)

Hashim, K. (2018) Adsorption of Gold on Iridium. Journal of Applied Mathematics and Physics, 6, 1324-1331. doi: 10.4236/jamp.2018.66111.