Temperature programmed desorption studies of the copper-sapphire (0001) system

✍ Scribed by Y. Ding; J. Blakely; R. Raj

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 396 KB
• Volume: 162
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/0921-5093(90)90037-4

✦ Synopsis

Temperature programmed desorption (TPD) studies of copper atoms were conducted on sapphire (0001) surfaces. Submonolayer to multimonolayer coverages of copper atoms were deposited onto the surfaces at room temperature. Subsequent copper desorption spectra at submonolayer coverages showed two peaks. The thermal activation energies associated with these peaks were determined to be 2.7 and 2.9 eV. The TPD spectra were consistent with copper island formation on the surface. The effects of annealing and oxidation on the samples were investigated.