Self-heating effect induced by ion bombardment on polycrystalline Al surface nanostructures evolution
نویسندگان
چکیده
منابع مشابه
Nanoscale self - affine surface smoothing by ion bombardment
Topography of silicon surfaces irradiated by a 2 MeV Si + ion beam at normal incidence and ion fluences in the range 10 15 − 10 16 ions/cm 2 has been investigated using scanning tunneling microscopy. At length scales below ∼ 50 nm, surface smoothing is observed; the smoothing is more prominent at smaller length scales. The smoothed surface is self-affine with a scaling exponent α = 0.53 ± 0.02....
متن کاملNanoscopic surface modification by slow ion bombardment
We present systematic scanning tunneling microscopy (STM)/atomic-force microscopic (AFM) investigations on nanoscopic defect production at atomically clean surfaces of SiO2, Al2O3 and highly oriented pyrolytic graphite (HOPG) after bombardment by slow (impact energy ≤ 1.2 keV) singly and multiply charged ions under strict ultra-high vacuum (UHV) conditions. Combined STM and AFM studies show tha...
متن کاملEffect of Alloying on Ion-bombardment-induced Surface Topography on Face-centred Cubic Mjztals
previous studies of sputter-induced topographical development have shown that it is possible to form pyramids on single-crystal fee metals oriented in the (1131) crystallographic direction. These pyramids form when the surface is bombarded with relatively large ( > 1 X 10” cmm2) doses of Ar+, Kr+ or Xe+ ions in the energy range 20-41 keV. Until recently most of the work was confined to pure fee...
متن کاملModel of Evolution of Surface Grain Structure under Ion Bombardment
Diffusion and chemical reactions in multicomponent systems play an important role in numerous technology applications. For example, surface treatment of materials and coatings by particle beam leads to chemical composition and grain structure change. To investigate the thermal-diffusion and chemical processes affecting the evolution of surface structure, the mathematical modeling is efficient a...
متن کاملAgeing dynamics of ion bombardment induced self-organization processes
Instabilities caused during the erosion of a surface by an ion beam can lead to the formation of self-organized patterns of nanostructures. Understanding the self-organization process requires not only the in-situ characterization of ensemble averaged properties but also probing the dynamics. This can be done with the use of coherent X-rays and analyzing the temporal correlations of the scatter...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Bulletin of Materials Science
سال: 2012
ISSN: 0250-4707,0973-7669
DOI: 10.1007/s12034-012-0300-z