Effect of annealing of Ag ultrathin films on Co/Pt(111) surface

Ching-Song Shern*, J. S. Tsay, S. L. Chen, Y. E. Wu


研究成果: 雜誌貢獻期刊論文同行評審

6 引文 斯高帕斯(Scopus)


Low-energy electron diffraction was used to study the annealing effects of Ag ultrathin films on the surface of one monolayer Co/Pt(111). The intensity of the specular beam versus temperature has an unusual minimum point and maximum point. Further studies by Auger electron spectroscopy indicate that the adatoms of Ag become a best ordered state after the formation of Co-Pt alloy is complete. The new order state comes from the structure change of Co/Pt(111) and the smaller lattice mismatch between Ag and Pt. The electron density of states of d band shifts to a lower binding energy when the system starts to form the Co-Pt alloy measured by ultraviolet photoelectron spectroscopy. The chemical compositions at interfaces of the thin film were investigated by a depth profile before and after the annealing. The sputtering rates of Ag on the topmost layer of the unannealed film and the annealed film were calculated and comparatively studied. A shadow effect causes the different sputtering rates of these two ultrathin films.

頁(從 - 到)228-232
期刊Journal of Applied Physics
出版狀態已發佈 - 1999

ASJC Scopus subject areas

  • 物理與天文學 (全部)


深入研究「Effect of annealing of Ag ultrathin films on Co/Pt(111) surface」主題。共同形成了獨特的指紋。