A photoemission investigation of deposition rate dependent growth of europium on silver films

✍ Scribed by G.H. Sørland; S. Raaen

• Book ID: 103937426
• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 335 KB
• Volume: 183
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(93)90134-r

✦ Synopsis

Europium overlayers on a polycrystalline silver substrate have been studied by X-ray photoelectron spectroscopy. Eu was deposited at rates of 0.4 A/min and 0.8 Almin. Ag 3d emission attenuation profiles show a distinct dependence on Eu evaporation rates. Sizeable Ag core level shifts upon deposition of Eu indicate that Eu and Ag react to form an interface alloy. A tendency of clustering at the surface of Eu is also argued to be present. The higher deposition rate is found to favor layer-by-layer growth, whereas the lower rate favors clustering or island formation.