Tight-binding Ising modeling of the interplay between bulk ordering and surface segregation in Pt-Ag nanoalloys
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چکیده
منابع مشابه
Control of Surface Segregation in Bimetallic NiCr Nanoalloys Immersed in Ag Matrix
Cr-surface segregation is a main roadblock encumbering many magneto-biomedical applications of bimetallic M-Cr nanoalloys (where M = Fe, Co and Ni). To overcome this problem, we developed Ni95Cr5:Ag nanocomposite as a model system, consisting of non-interacting Ni95Cr5 nanoalloys (5 ± 1 nm) immersed in non-magnetic Ag matrix by controlled simultaneous co-sputtering of Ni95Cr5 and Ag. We employe...
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The interplay between surface-water and hydrogen bonding in a water adlayer on Pt(111) and Ag(111).
The structure of a water adlayer on a Pt(111) surface is investigated by means of extensive first-principles calculations. Allowing for proton disorder, the ground state energy for the [Formula: see text] structure can be found. This results from an interplay between water/metal chemical bonding and the hydrogen bonding of the water network. This picture is supported by substituting Pt(111) wit...
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ژورنال
عنوان ژورنال: Surface Science
سال: 2020
ISSN: 0039-6028
DOI: 10.1016/j.susc.2020.121626