solid solutions of ag-cu were prepared via ball milling process, for about 5-30 h. the cu-20at%ag and cu-3.64at%ag composition were investigated by x-ray diffraction technique. it was realized that the solid solubility level could be increased by increasing the initial solute content in the mixture. in addition, shifts in peak positions of silver and copper were observed with milling time. the ...

The long-range ordered surface alloy Bi/Ag(111) is found to exhibit a giant spin splitting of its surface electronic structure due to spin-orbit coupling, as is determined by angle-resolved photoelectron spectroscopy. First-principles electronic structure calculations fully confirm the experimental findings. The effect is brought about by a strong in-plane gradient of the crystal potential in t...

The formation of nanosized alloys between a pair of elements, which are largely immiscible in bulk, is examined in the archetypical case of Pt and Au. Element specific resonant high-energy X-ray diffraction experiments coupled to atomic pair distribution functions analysis and computer simulations prove the formation of Pt-Au alloys in particles less than 10 nm in size. In the alloys, Au-Au and...

Ab initio and kinetic Monte Carlo calculations elucidate the electronic nature of surface Sn alloying on the stability and mobility of a Cu adatom on the Cu-Sn (111) alloy surface. Sn atoms segregate on the surface and introduce forbidden areas around them within which adatom adsorption is strictly prohibited. In addition they reduce dramatically both the binding and the mobility of Cu adatoms ...

Nickel silicides are widely used in making electrical contact to complementary metal-oxidesemiconductor (CMOS) devices in advanced integrated circuits. They have been the preferred contacting material since the 2006 “65 nm technology node”, partly because a self-aligned-silicide (“SALICIDE” [1]) process is available. However, their high temperature behaviour is complex and, crucially, improved ...

The bismuth double perovskite Cs 2 AgBiBr 6 has been regarded as a potential candidate for lead-free photovoltaics. A detailed study on the coherent acoustic phonon dynamics in pure, Sb- and Tl-alloyed single crystals is performed to understand effects of alloying band edge characteristics. frequencies are found be independent alloying, while damping rates highly dependent alloying. Based mecha...