Spatial pattern formation in a catalytic surface reaction: The facetting of Pt(110) in CO+
- 19 March 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 64 (12) , 1409-1412
- https://doi.org/10.1103/physrevlett.64.1409
Abstract
A detailed LEED beam profile analysis of the structural changes induced by the catayltic CO oxidation on Pt(110) has been carried out with a high-resolution instrument (SPALEED). Under conditions where the 1×2⇄1×1 phase transition also takes place one observes spatial pattern formation via a faceting process. Facts of roughly uniform size and orientation build up a regular array characterized by a lateral periodicity of 70 lattice units along [11¯0]. The mechanism is discussed in terms of a nonequilibrium structure arising from kinetic instabilities.Keywords
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