Exchange effect on alloy formation of Co/Ag/Pt(111) ultrathin films

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Title:	Exchange effect on alloy formation of Co/Ag/Pt(111) ultrathin films
Authors:	Shern, C. S. Wu, Y.E. Wu, Y.F. 吳月娥
Contributors:	臺北市立教育大學自然科學系
Keywords:	Ultrathin films Cobalt Silver Platinum Atomic physics Annealing Temperature Alloying Auger electron spectroscopy Low energy electron diffraction Diffusion in solids Ultraviolet spectroscopy Photoelectron spectroscopy Cobalt platinum alloy Surface diffusion Ultraviolet photoelectron spectroscopy
Date:	1999
Issue Date:	2009-07-27 14:49:19 (UTC+8)
Abstract:	The exchange between Co atoms and Ag atoms of Co/Ag/Pt(111) ultrathin films affects the formation of Co-Pt alloy. Ag atoms float to the top layers when the annealing temperature is high enough. With further annealing, the formation of the Co-Pt alloyis developed after the exchange between Ag and Co atoms is complete. The starting temperature of the exchange is independent of the coverage of Ag, but the temperature of the complete exchange depends on the thickness of Ag. The temperature is higher when the coverage of Ag increases. The mechanism of the exchange is discussed.
Relation:	Surface Science, V439(1-3)
Appears in Collections:	[Department of Applied Physics and Chemistry] Periodical Articles

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