A vitrifying structure transition in the Dy/Mo(112) adsorption system

Annealing-driven irreversible structural transitions are studied by low-energy electron diffraction in submonolayer Dy films adsorbed on the Mo(112) surface. In a wide coverage range θ>0.07, Dy overlayers deposited at low temperatures (T≈100  K ) are ordered and keep their structure upon annealin...

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Bibliographic Details
Published in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2001-09, Vol.27 (9), p.850-853
Main Authors: Fedorus, A., Koval, V., Naumovets, A., Pfnür, H.
Format: Article
Language:English
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Summary:Annealing-driven irreversible structural transitions are studied by low-energy electron diffraction in submonolayer Dy films adsorbed on the Mo(112) surface. In a wide coverage range θ>0.07, Dy overlayers deposited at low temperatures (T≈100  K ) are ordered and keep their structure upon annealing up to 350–600 K. Near θ=0.68, the overlayers are stable to high-temperature annealing (T a =1000  K ) as well, whereas the denser films are metastable and transform to more stable ordered structures. An unusual annealing effect is found for θ
ISSN:1063-777X
1090-6517
DOI:10.1063/1.1414575