1. Pt is a face centered cubic metal with lattice parameter = 3.91A. A bulk terminated (100) surface is exposed to oxygen molecules which adsorb onto the surface, dissociate into oxygen atoms and form the surface reconstruction shown below. Pt 0 a) Identify two ways of naming this reconstruction using Wood's notations. b) What are the magnitudes of the reconstruction lattice parameters in each case?

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1. Pt is a face centered cubic metal with lattice parameter = 3.91Å. A bulk terminated
(100) surface is exposed to oxygen molecules which adsorb onto the surface, dissociate
into oxygen atoms and form the surface reconstruction shown below.
O Pt
a) Identify two ways of naming this reconstruction using Wood's notations.
b) What are the magnitudes of the reconstruction lattice parameters in each case?
Transcribed Image Text:1. Pt is a face centered cubic metal with lattice parameter = 3.91Å. A bulk terminated (100) surface is exposed to oxygen molecules which adsorb onto the surface, dissociate into oxygen atoms and form the surface reconstruction shown below. O Pt a) Identify two ways of naming this reconstruction using Wood's notations. b) What are the magnitudes of the reconstruction lattice parameters in each case?
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