Phase transitions in the chemisorbed layer W(110) p (2×1)–O as a function of coverage. I. Experimental
- 1 July 1978
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 69 (1), 479-489
- https://doi.org/10.1063/1.436377
Abstract
The thermal disordering of oxygen chemisorbed on W(110) has been investigated as a function of coverage below half‐monolayer coverage by measuring the angular distribution of intensity in the LEED superlattice reflections as a function of temperature. The transition temperature is a function of coverage, being much lower at low coverage. A partial phase diagram is constructed for this overlayer, and the low‐ and high‐coverage limits are interpreted, respectively, in terms of an island–dissolution and an order–disorder transition.Keywords
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