کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1668065 | 1008862 | 2011 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Geometrical surface structure of ultra thin Al film on the W(110) surface Geometrical surface structure of ultra thin Al film on the W(110) surface](/preview/png/1668065.png)
Using low energy electron diffraction (LEED) and low energy ion scattering spectroscopy (ISS) we investigated the structure of the surface of 1.0 monolayer (ML) Al/W(110) prepared by annealing at 900 K. A p(1 × 1) LEED image was acquired for the 1.0 ML Al/W(110) surface while the substrate temperature was maintained at 900 K during Al deposition. We found that, 1.0 ML Al atoms cover the W(110) surface uniformly, and do not form three-dimensional islands. We also measured the Al adsorption site at the 1.0 ML Al/W(110) surface using ISS. The ISS results show that the 1.0 ML Al/W(110) surface prepared by annealing at 900 K has two domains with a p(1 × 1) structure. The experiments reveal that the Al atoms were adsorbed at the centers of the hollow sites and are located ± 0.55 Å to the [11¯0] side, and the adsorption height was 2.13 Å above the W surface.
Journal: Thin Solid Films - Volume 520, Issue 3, 30 November 2011, Pages 1057–1062