How to calculate the number of Si and Au atoms in Si (111) and Au (111)?

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Ahmed Bahloul

you can use lot of techniques,

- SIMS (Secondary Ionic Mass Spectroscopy)

- XPS (X ray photon Spectroscopy)

- SDX (or EDX) (X ray Dispersive Spectroscopy)

- maybe RPE

Yong Guo

I think the number of atoms in some face depends on the area of the face. just assume one face, and then calculate.

Ganesan Elumalai

Yes, Both Au (111) and Si (111) are face centered cubic.. which means 8 corners (8 atoms) and 6 faces (6 atoms).. totally 14 atoms... but these 8 corners are shared with other cubes and the same for faces (6 faces shared with other cubes).. Now, my doubt is Is all fcc single crystals have 14 atoms? Please comment about this I may not be correct...