Matches in SemOpenAlex for { <https://semopenalex.org/work/W2088436700> ?p ?o ?g. }
- W2088436700 abstract "Abstract Gallium, indium and tin were deposited on a tungsten tip by making a contact between the tip and these metals in the liquid state. The activation energies of diffusion of the adsorbates on tungsten were found to be 0.29 eV for Ga, 0.35 eV for In and 0.71 eV for Sn. The adsorbates were field-evaporated by gradually increasing a positive tip voltage by a small increment each time and the variation of the work function with the decreasing coverage was examined for each evaporation stage. The result indicates that the adatoms assume one of two different adsorption states. The adatoms bound as strongly as in a bulk crystal were field-evaporated at a low evaporation field. The remaining adatoms form a more strongly bound covering layer which maximizes the average work function of the covered surfaces, 4.75 eV for Ga, 4.63 eV for In and 5.10 eV for Sn, and are field-evaporated at a significantly higher field. The covering layer of the strongly bound adatoms were observed on the areas from the {001} to {114} planes and were hardly noticed on the {011} and 112 areas. The arrangement of the strongly bound adatoms, particularly on the {114} planes, is found to be a precise replica of the substrate arrangement. Thus, the surface density of the adatoms is exactly the surface density of the substrate atoms. The observed results suggest that an adatom occupying a tungsten lattice site and contacting four substrate tungsten atoms can establish unusually strong bonding with the substrate." @default.
- W2088436700 created "2016-06-24" @default.
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- W2088436700 date "1976-11-01" @default.
- W2088436700 modified "2023-09-25" @default.
- W2088436700 title "Field emission and field ion microscope study of Ga, In and Sn on W: Structure, work function, diffusion and binding energy" @default.
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- W2088436700 doi "https://doi.org/10.1016/0039-6028(76)90319-8" @default.
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